| 释义 |
transposition
trans·po·si·tion T0324500 (trăns′pə-zĭsh′ən)n.1. a. The act or an instance of transposing.b. The state of being transposed.2. Something transposed.3. Genetics Transfer of a segment of DNA to a new position on the same or another chromosome or plasmid.
trans′po·si′tion·al adj.transposition (ˌtrænspəˈzɪʃən) n1. the act of transposing or the state of being transposed2. something transposed ˌtranspoˈsitional, transpositive adjtrans•po•si•tion (ˌtræns pəˈzɪʃ ən)
n. 1. an act of transposing. 2. the state of being transposed. 3. a transposed form of something. 4. the movement of a gene or set of genes from one DNA site to another. [1530–40; < Medieval Latin trānspositiō. See trans-, position] trans`po•si′tion•al, trans•pos′i•tive (-ˈpɒz ɪ tɪv) adj. Thesaurus| Noun | 1. | transposition - any abnormal position of the organs of the bodyheterotaxyabnormalcy, abnormality - an abnormal physical condition resulting from defective genes or developmental deficiencies | | 2. |  transposition - an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"permutation, substitution, switch, replacementvariation, fluctuation - an instance of change; the rate or magnitude of change | | 3. | transposition - (genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosomegenetic 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 | | 4. | transposition - (mathematics) the transfer of a quantity from one side of an equation to the other along with a change of signcalculation, computation, computing - the procedure of calculating; determining something by mathematical or logical methodsalgebra - the mathematics of generalized arithmetical operations | | 5. | transposition - (electricity) a rearrangement of the relative positions of power lines in order to minimize the effects of mutual capacitance and inductance; "he wrote a textbook on the electrical effects of transposition"rearrangement - changing an arrangementelectricity - a physical phenomenon associated with stationary or moving electrons and protons | | 6. | transposition - the act of reversing the order or place ofreversalreordering - a rearrangement in a different order | | 7. | transposition - (music) playing in a different key from the key intended; moving the pitch of a piece of music upwards or downwardsplaying - the act of playing a musical instrumentmusic - an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner |
transpositionnoun1. The act of exchanging or substituting:change, commutation, exchange, interchange, shift, substitution, switch, trade.Informal: swap.2. The act of changing or being changed from one position, direction, or course to the opposite:inversion, reversal, turnabout, turnaround.TranslationstranspositiontrasposizioneTransposition
transposition[‚tranz·pə′zish·ən] (communications) Interchanging the relative positions of conductors at regular intervals along a transmission line to reduce cross talk. (mathematics) A permutation of a set of symbols which exchanges exactly two while leaving all others unaffected. Transposition in electrical engineering, a change in the relative position of the conductors of individual phases along the length of an overhead power line in order to reduce the undesirable influence of power lines on one another and on nearby communication lines. To make a transposition, an entire power line is arbitrarily divided into sections, the number of which is a multiple of the number of phases. In each successive section the phases change places, so that each phase eventually occupies the positions of the others. The length of a section is determined by the conditions for reliable operation of the power line, the cost of constructing the power line, and the requirements for balance of the power line’s currents and voltages; the balance increases as a result of the equalization of the inductances and capacitances of the power line’s phases in a transposition section. Transpositions are made on power lines that are over 100 km in length and have voltages of 110 or more kilovolts. A complete phase-transposition cycle covers a length of not more than 300 km. REFERENCEMel’nikov.N. A. Elektricheskie seti i sistemy. Moscow, 1975.
Transposition in mathematics, a permutation of the elements of a given set whereby two elements are interchanged. For example, 13452 is transformed into 53412 by a transposition that interchanges the elements 5 and 1. (SeePERMUTATION.)
Transposition in music, the transfer of all the notes of a composition to a designated lower or higher key. Transposition by any interval other than an octave results in a change of key. The purpose of transposition is to adapt musical compositions for performance to a higher or lower voice or to an instrument with a different range. Transposition may also facilitate reading by reducing the number of sharps and flats needed in notation. transposition
transposition [trans″po-zish´un] displacement to the opposite side; in genetics, the nonreciprocal insertion of material deleted from one chromosome into another, nonhomologous chromosome.transposition of great vessels a congenital heart defect in which the position of the chief blood vessels of the heart is reversed, so that the aorta arises from the right ventricle instead of the left and the pulmonary artery emerges from the left ventricle rather than from the right. The result is that oxygen-poor blood returning from the systemic circulation to the right side of the heart gets pumped back into the general circulation instead of being transported to the lungs, and oxygen-rich blood flows aimlessly to and from the lungs. The condition may be corrected by surgery.  Complete transposition of great arteries.trans·po·si·tion (trans-pō-zi'shŭn), 1. Removal from one place to another; metathesis. 2. The condition of being in the wrong place or on the wrong side of the body (for example, viscera placed opposite their normal position; such as liver on the left or apex of heart on right). 3. Movement to a new site in the genome. 4. Misplacement of teeth from normal sequence in the arch. transposition (trăns′pə-zĭsh′ən)n. Genetics Transfer of a segment of DNA to a new position on the same or another chromosome or plasmid.
trans′po·si′tion·al adj.transposition Pediatrics A malposition of an organ or tissues that occurs during embryogenesis Psychiatry See Gender identity transposition Surgery Plastic surgery in which a flap of tissue is moved from one site to another and allowed sufficient time to establish a new blood supply before severing the vascular connection with the donor site. See Sensory nerve transposition. trans·po·si·tion (trans'pŏ-zish'ŭn) 1. Removal from one place to another; metathesis. 2. The condition of being transposed to the wrong side of the body, as in transposition of the viscera, in which the viscera are located opposite their normal position. 3. Positioning of teeth out of their normal sequence in an arch. transposition In genetics, the movement of a length of genetic material from one point in a DNA molecule to another.transposition 1. The act of converting the prescription of an ophthalmic lens from a sphere with minus cylinder form to a sphere with plus cylinder form or vice versa. Example: −3 D sphere −2 D cylinder axis 180º transposes to −5 D sphere +2 D cylinder axis 90º. 2. A surgical procedure used to correct muscle paralysis. In this procedure, adjacent muscles are transferred (transposed) to the paralysed muscle, allowing for partial movement in the field of action of the paretic muscle. There are various procedures: one in which parts of the recti muscles are sutured together (the superior and inferior recti are disinserted and joined to the lateral rectus) to correct lateral rectus palsy and improve abduction (Hummelsheim's procedure or trans·po·si·tion (trans'pŏ-zish'ŭn) 1. Misplacement of teeth from normal sequence in the arch. 2. Removal from one place to another; metathesis. 3. Condition of being in wrong place or on wrong side of the body. transposition
Related to transposition: Transposition of the great arteries, Transposition of the great vesselsSynonyms for transpositionnoun the act of exchanging or substitutingSynonyms- change
- commutation
- exchange
- interchange
- shift
- substitution
- switch
- trade
- swap
noun the act of changing or being changed from one position, direction, or course to the oppositeSynonyms- inversion
- reversal
- turnabout
- turnaround
Synonyms for transpositionnoun any abnormal position of the organs of the bodySynonymsRelated Wordsnoun an event in which one thing is substituted for anotherSynonyms- permutation
- substitution
- switch
- replacement
Related Wordsnoun (genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosomeRelated Words- genetic science
- genetics
- chromosomal mutation
- genetic mutation
- mutation
noun (mathematics) the transfer of a quantity from one side of an equation to the other along with a change of signRelated Words- calculation
- computation
- computing
- algebra
noun (electricity) a rearrangement of the relative positions of power lines in order to minimize the effects of mutual capacitance and inductanceRelated Wordsnoun the act of reversing the order or place ofSynonymsRelated Wordsnoun (music) playing in a different key from the key intendedRelated Words |