inversion

inversionCooler surface air trapped by a layer of warm air prevents the dispersion of pollutants.

in·ver·sion

I0214700 (ĭn-vûr′zhən)n.1. a. The act of inverting.b. The state of being inverted.2. An interchange of position of adjacent objects in a sequence, especially a change in normal word order, such as the placement of a verb before its subject.3. Music a. A rearrangement of tones in which the upper and lower voices of a melody are transposed, as in counterpoint.b. A rearrangement of tones in which each interval in a single melody is applied in the opposite direction.c. An arrangement of the tones of a chord such that the root is not the lowest pitch, as in the rearrangement of the C-major triad CEG to EGC.4. Psychology In early psychology, behavior or attitudes in an individual considered typical of the opposite sex, including sexual attraction to members of one's own sex. No longer in technical use.5. Chemistry Conversion of a substance in which the direction of optical rotation is reversed, from the dextrorotatory to the levorotatory or from the levorotatory to the dextrorotatory form.6. Meteorology An atmospheric condition in which the air temperature rises with increasing altitude, holding surface air down and preventing dispersion of pollutants.7. Genetics A chromosomal rearrangement in which a segment of the chromosome breaks off and reattaches in the reverse direction.

[Latin inversiō, inversiōn-, from inversus, past participle of invertere, to invert; see invert.]

inversion

(ɪnˈvɜːʃən) n1. the act of inverting or state of being inverted2. something inverted, esp a reversal of order, mutual functions, etc: an inversion of their previous relationship. 3. (Rhetoric) rhetoric Also called: anastrophe the reversal of a normal order of words4. (Chemistry) chem a. the conversion of a dextrorotatory solution of sucrose into a laevorotatory solution of glucose and fructose by hydrolysisb. any similar reaction in which the optical properties of the reactants are opposite to those of the products5. (Classical Music) music a. the process or result of transposing the notes of a chord (esp a triad) such that the root, originally in the bass, is placed in an upper part. When the bass note is the third of the triad, the resulting chord is the first inversion; when it is the fifth, the resulting chord is the second inversion. See also root positionb. (in counterpoint) the modification of a melody or part in which all ascending intervals are replaced by corresponding descending intervals and vice versac. the modification of an interval in which the higher note becomes the lower or the lower one the higher. See complement⁸6. (Pathology) pathol abnormal positioning of an organ or part, as in being upside down or turned inside out7. (Psychiatry) psychiatry a. the adoption of the role or characteristics of the opposite sexb. another word for homosexuality8. (Physical Geography) meteorol an abnormal condition in which the layer of air next to the earth's surface is cooler than an overlying layer9. (Phonetics & Phonology) anatomy phonetics another word for retroflexion²10. (Computer Science) computing an operation by which each digit of a binary number is changed to the alternative digit, as 10110 to 0100111. (Genetics) genetics a type of chromosomal mutation in which a section of a chromosome, and hence the order of its genes, is reversed12. (Logic) logic the process of deriving the inverse of a categorial proposition13. (Mathematics) maths a transformation that takes a point P to a point P′ such that OP·OP′ = a², where a is a constant and P and P′ lie on a straight line through a fixed point O and on the same side of it inˈversive adj

in•ver•sion

(ɪnˈvɜr ʒən, -ʃən)

n. 1. an act or instance of inverting. 2. the state of being inverted. 3. anything that is inverted. 4. anastrophe. 5. a reversal of the usual order of words, as in the placement of the subject after an auxiliary verb in a question. 6. the turning inward of an anatomical part, as the foot. 7. a hydrolysis of certain carbohydrates, as cane sugar, that results in a reversal of direction of the rotatory power of the carbohydrate solution. 8. a. the process or result of transposing the musical tones of an interval or chord so that the original bass becomes an upper voice. b. (in counterpoint) the transposition of the upper voice part below the lower, and vice versa. 9. homosexuality. 10. a reversal of the linear order of genes on a chromosome. 11. a reversal in the normal atmospheric lapse rate, the temperature rising at higher altitudes rather than falling. 12. a conversion of direct current into alternating current. 13. the operation of forming the inverse of a point, function, etc. in•ver′sive, adj.

inversion

The reversal of the order in which words would normally be used.

Thesaurus

Noun	1.	inversion - the layer of air near the earth is cooler than an overlying layeratmospheric phenomenon - a physical phenomenon associated with the atmosphere
	2.	inversion - abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth)abnormalcy, abnormality - an abnormal physical condition resulting from defective genes or developmental deficiencies
	3.	inversion - a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versachemical action, chemical change, chemical process - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
	4.	inversion - (genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversedgenetic science, genetics - the branch of biology that studies heredity and variation in organismschromosomal mutation, genetic mutation, mutation - (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism
	5.	inversion - the reversal of the normal order of wordsanastropherhetorical device - a use of language that creates a literary effect (but often without regard for literal significance)
	6.	inversion - (counterpoint) a variation of a melody or part in which ascending intervals are replaced by descending intervals and vice versacounterpoint - a musical form involving the simultaneous sound of two or more melodiesvariation - a repetition of a musical theme in which it is modified or embellished
	7.	inversion - a term formerly used to mean taking on the gender role of the opposite sexsexual inversiongayness, homoeroticism, homosexualism, homosexuality, queerness - a sexual attraction to (or sexual relations with) persons of the same sex
	8.	inversion - turning upside down; setting on endupendingmovement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"overturn, turnover, upset - the act of upsetting something; "he was badly bruised by the upset of his sled at a high speed"
	9.	inversion - the act of turning inside outeverting, eversionmovement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"

inversion

noun reversal, opposite, antithesis, transposition, contrary, contrariety, contraposition, transposal, antipode a strange inversion of priorities

inversion

nounThe act of changing or being changed from one position, direction, or course to the opposite:reversal, transposition, turnabout, turnaround.

Translations

倒置倒转

invert

(inˈvəːt) verb to turn upside down or reverse the order of. 使颠倒，使倒置 inˈversion (-ʃən) noun 倒转，倒置 inverted commas single or double commas, the first (set) of which is turned upside down (`` '', ` '), used in writing to show where direct speech begins and ends. ``It is a lovely day,'' she said.引号

Inversion

inversion

1. Chema. the conversion of a dextrorotatory solution of sucrose into a laevorotatory solution of glucose and fructose by hydrolysis b. any similar reaction in which the optical properties of the reactants are opposite to those of the products 2. Musica. the process or result of transposing the notes of a chord (esp a triad) such that the root, originally in the bass, is placed in an upper part. When the bass note is the third of the triad, the resulting chord is the first inversion; when it is the fifth, the resulting chord is the second inversion b. (in counterpoint) the modification of a melody or part in which all ascending intervals are replaced by corresponding descending intervals and vice versa c. the modification of an interval in which the higher note becomes the lower or the lower one the higher 3. Pathol abnormal positioning of an organ or part, as in being upside down or turned inside out 4. Psychiatrya. the adoption of the role or characteristics of the opposite sex b. another word for homosexuality5. Meteorol an abnormal condition in which the layer of air next to the earth's surface is cooler than an overlying layer 6. Computing an operation by which each digit of a binary number is changed to the alternative digit, as 10110 to 01001 7. Genetics a type of chromosomal mutation in which a section of a chromosome, and hence the order of its genes, is reversed 8. Logic the process of deriving the inverse of a categorial proposition 9. Maths a transformation that takes a point P to a point Pʹ such that OP?OPʹ = a², where a is a constant and P and Pʹ lie on a straight line through a fixed point O and on the same side of it

Inversion

in chemistry. (1) A change in the conformation of a cyclic molecule as a result of which the orientation of the substituent with respect to the ring changes. For example, methylcyclohexane exists in the form of an equilibrium mixture of two conformations, form II predominating (see Figure 1).

The frequency of inversion depends on the nature of the substituents and on temperature.

(2) The conversion of the configuration of a molecule containing a trivalent “pyramidal” atom (for example, nitrogen or arsenic) into the mirror image. Thus, for a molecule with a trivalent atom, forms I and II are the optical antipodes:

where a, b, and c are different atoms or groups of atoms. The energy barrier for inversion is usually low and depends on the temperature and the nature of a, b, and c. For the carbon atom (a “tetrahedral” atom), the term “configuration reversal” is usually used.

(3) The inversion of sugar is the hydrolysis of a saccharose (such as beet sugar) accompanied by a change in the direction of rotation of the plane of a polarized beam of light by a sugar solution.

B. L. DIATKIN

Inversion

(1) In geometry, inversion with respect to a given circle of radius R with a center O is a transformation (see Figure 1) in which a point P is converted to a point P ′ (in Figure 1 the points Pand P ′ are given with numerical subscripts), which lies on a radial line OP at a distance OP ′ = R²/OP from the center O; the number R² is called the inversion factor. Upon inversion, straight lines and circles become straight lines and circles, and circles, for example, may become straight lines and vice versa. Inversion in space with reference to a sphere is defined similarly. The transformation of an inversion has numerous applications in geometry (the interpretation of Lobachevskii’s geometry, the theory of geometric constructions) and in the theory of mechanisms—so-called inversors.

Figure 1

(2) In combinatorial analysis, inversion is the disruption of the normal sequence of two elements in a permutation regardless of whether these two terms stand together or are separated from each other by some other elements, for example, in the permutation eacbd the terms a and e, c and e, b and e, d and e, and b and c form an inversion if abcde is considered to be the normal order.

Inversion

a change in the usual word order in a sentence. Inversion is generally used to accentuate the rearranged element in the sentence and to give the entire sentence special meaning. In languages with fixed word order, inversion has a grammatical function—for example, to form interrogative sentences in Russian, English, and French. It is one of the aspects of the actual division of a sentence—for example, Russian Videl ia otsa (“Saw I Father”) and German Den Sohn liebt die Mutter (literally, “The son [accusative] loves the mother [nominative],” that is, “The mother loves the son”).

Frequently, inverted forms that are not accepted in everyday speech are used in poetry. For example, A. S. Pushkin: Minutnykh zhizni vpechatlenii / Ne sokhranit dusha moia (roughly, “The fleeting impressions of life/ My soul does not retain”) and Pod vecher, osen ‘iu nenastnoi, / V dalekikh deva shla mestakh (roughly, “Toward evening, in rainy autumn, / In far-off places a maiden walked”).

inversion

[in′vər·zhən] (chemistry) Change of a compound into an isomeric form. (communications) The process of scrambling speech for secrecy by beating the voice signal with a fixed, higher audio frequency and using only the difference frequencies. (crystallography) A change from one crystal polymorph to another. Also known as transformation. (electricity) The solution of certain problems in electrostatics through the use of the transformation in Kelvin's inversion theorem. (genetics) A type of chromosomal rearrangement in which two breaks take place in a chromosome and the orientation of the fragment between breaks rotates 180° before rejoining. (geology) Development of inverted relief through which anticlines are transformed into valleys and synclines are changed into mountains. The occupancy by a lava flow of a ravine or valley that occurred in the side of a volcano. A diagenetic process in which unstable minerals are converted to a more stable form without a change in chemical composition. (mathematics) Given a point O lying in a plane or in space, a mapping of the plane or of space, excluding the point O, into itself in which every point is mapped into its inverse point with respect to a circle or sphere centered at O. The interchange of two adjacent members of a sequence. (mechanical engineering) The conversion of basic four-bar linkages to special motion linkages, such as parallelogram linkage, slider-crank mechanism, and slow-motion mechanism by successively holding fast, as ground link, members of a specific linkage (as drag link). (medicine) The act or process of turning inward or upside down. (meteorology) A departure from the usual decrease or increase with altitude of the value of an atmospheric property, most commonly temperature. (optics) The formation of an inverted image by an optical system. (physics) The simultaneous reflection of all three directions in space, so that each coordinate is replaced by the negative of itself. Also known as space inversion. (solid-state physics) The production of a layer at the surface of a semiconductor which is of opposite type from that of the bulk of the semiconductor, usually as the result of an applied electric field. (thermodynamics) A reversal of the usual direction of a variation or process, such as the change in sign of the expansion coefficient of water at 4°C, or a change in sign in the Joule-Thomson coefficient at a certain temperature.

inversion

In meteorology, a departure from the usual decrease or increase with altitude of the value of an atmospheric property. Also, the layer through which this departure occurs, called the inversion layer, or the lowest altitude at which the departure is found (i.e., the base of the inversion). This term almost always means a temperature inversion and an increase in temperature with height. It is one of the causes for the formation of smog. The presence of an inversion creates a very stable atmosphere; when it occurs at the surface it leads to very little mixing and a trapping of pollutants in the lower atmosphere.

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Synonyms for inversion

noun reversal

Synonyms

Synonyms for inversion

noun the act of changing or being changed from one position, direction, or course to the opposite

Synonyms

Synonyms for inversion

noun the layer of air near the earth is cooler than an overlying layer

Related Words

noun abnormal condition in which an organ is turned inward or inside out (as when the upper part of the uterus is pulled into the cervical canal after childbirth)

Related Words

noun a chemical process in which the direction of optical rotation of a substance is reversed from dextrorotatory to levorotary or vice versa

Related Words

noun (genetics) a kind of mutation in which the order of the genes in a section of a chromosome is reversed

Related Words

noun the reversal of the normal order of words

Synonyms

Related Words

noun (counterpoint) a variation of a melody or part in which ascending intervals are replaced by descending intervals and vice versa

Related Words

noun a term formerly used to mean taking on the gender role of the opposite sex

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noun turning upside down

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noun the act of turning inside out

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Related Words