cephalic index

n. The ratio of the maximum width of the head to its maximum length, multiplied by 100.

cephalic index

n (Anatomy) the ratio of the greatest width of the human head to its greatest length, multiplied by 100

cephal′ic in′dex

n. the ratio of the greatest breadth of the head to its greatest length from front to back, multiplied by 100. [1865–70]

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Noun

cephalic index - ratio (in percent) of the maximum breadth to the maximum length of a skullbreadth index, cranial indexratio - the relative magnitudes of two quantities (usually expressed as a quotient)

cephalic index

index, cephalic:

see cephalic indexcephalic index
[Gr. kephale=head], ratio of the breadth of the head to its length. Expressed as a percental number, it provides the simplest description of the geometric relation of two dimensions.
..... Click the link for more information. .

cephalic index

(səfăl`ĭk) [Gr. kephale=head], ratio of the breadth of the head to its length. Expressed as a percental number, it provides the simplest description of the geometric relation of two dimensions. The index is obtained by dividing the maximum width of the cranium by its maximum length and multiplying by 100. In anthropometryanthropometry
, technique of measuring the human body in terms of dimensions, proportions, and ratios such as those provided by the cephalic index. Once the standard approach to racial classification and comparing humans to other primates, the technique is now used for deciding
..... Click the link for more information. , the cephalic index has been the favored measurement. A cephalic index of 80 or more is called brachycephalic or broad; a measurement between 75 and 80 is mesaticephalic; below 75 is considered dolicocephalic or long. The cranial index is the same ratio taken on a skull.

Cephalic Index

the ratio of the head’s greatest breadth (transverse diameter) to its greatest length (longitudinal diameter), expressed in percent.

The cephalic index is used in anthropology for determining the head contour in the horizontal plane. When the index is under 74.9 it is called dolichocephalic; between 75.0 and 79.9, mesaticephalic; and above 80.0, brachycephalic. With the aid of the cephalic index, local anthropological types can be isolated within the major races of man. Group variations in cephalic index are already reflected in early childhood. In comparison with earlier times, there has been an increase since the Middle Ages in the cephalic index (brachycephali-zation), although a decrease in the index (debrachycephaliza-tion) was recorded at a number of locations between 1950 and 1970. The cephalic index is not related to intellect.

V. P. CHTETSOV

Cephalic Index

in anthropology, the degree of protuberance of the face and the parts of the face in a vertical or horizontal plane. A vertical cephalic index is characterized by the facial angle, by the angle of the nasal portion of the face, or by the angle of the alveolar portion of the face.

A face is classified according to its facial angle. Thus, a prognathous face has an angle up to 79.9°, a mesognathous face has an angle of 80.0° to 84.9°, and an orthognathous face has an angle of 85° or more. A horizontal cephalic index determines facial flatness at the level of the root of nose; it also determines the degree of protuberance of the cheekbones. Cephalic indexes are good racial indicators.

cephalic index

[sə′fal·ik ′in‚deks] (anthropology) The ratio of maximum breadth to maximum length of the head multiplied by 100.

cephalic index

index

(pl. indexes, in´dices) (L.) 1. the numerical ratio of measurement of any part in comparison with a fixed standard.2. forefinger.Barthel index an objective, standardized tool for measuring functional status. The individual is scored in a number of areas depending upon independence of performance. Total scores range from 0 (complete dependence) to 100 (complete independence).bleeding index any of various methods of assessing bleeding in the gingival sulcus before or after treatment.body mass index (BMI) the weight in kilograms divided by the square of the height in meters, a measure of body fat that gives an indication of nutritional status.cardiac index cardiac output corrected for body size.cephalic index 100 times the maximum breadth of the skull divided by its maximum length.citation index an index listing all publications appearing in a set of source publications (e.g., articles in a defined group of journals) that cite a given publication in their bibliographies.Colour index a publication of the Society of Dyers and Colourists and the American Association of Textile Chemists and Colorists containing an extensive list of dyes and dye intermediates. Each chemically distinct compound is identified by a specific number, the C.I. number, avoiding the confusion of trivial names used for dyes in the dye industry.erythrocyte indices the volume" >mean corpuscular volume, hemoglobin" >mean corpuscular hemoglobin, and concentration." >mean corpuscular hemoglobin concentration. These are all useful for evaluating anemias because they provide information on the size of the erythrocytes and the concentration of hemoglobin. Called also red cell or red blood cell indices.glycemic index a ranking of foods based on the response of postprandial sugar" >blood sugar levels as compared with a reference food, usually either white bread or glucose. See table.left ventricular stroke work index (LVSWI) an index of the amount of work performed by the heart.leukopenic index a fall of 1000 or more in the total leukocyte count within 1.5 hours after ingestion of a given food; it indicates allergic hypersensitivity to that food.index Medicus a monthly publication of the national library of medicine in which the world's leading biomedical literature is indexed by author and subject.opsonic index a measure of opsonic activity determined by the ratio of the number of microorganisms phagocytized by normal leukocytes in the presence of serum from an individual infected by the microorganism, to the number phagocytized in serum from a normal individual.phagocytic index any arbitrary measure of the ability of neutrophils to ingest native or opsonized particles determined by various assays; it reflects either the average number of particles ingested or the rate at which particles are cleared from the blood or culture medium.red blood cell indices (red cell indices) erythrocyte indices.refractive index the refractive power of a medium compared with that of air (assumed to be 1).short increment sensitivity index (SISI) a hearing test in which randomly spaced, 0.5-second tone bursts are superimposed at 1- to 5-decibel increments in intensity on a carrier tone having the same frequency and an intensity of 20 decibels above the speech recognition threshold.therapeutic index originally, the ratio of the maximum tolerated dose to the minimum curative dose; now defined as the ratio of the median lethal dose (LD₅₀) to the median effective dose (ED₅₀). It is used in assessing the safety of a drug.

ce·phal·ic in·dex

the ratio of the maximal breadth to the maximal length of the head, obtained by the formula: (breadth × 100)/length. Synonym(s): length-breadth index

cephalic index

n. The ratio of the maximum width of the head to its maximum length, multiplied by 100.

ce·phal·ic in·dex

(sĕ-falik indeks) The ratio of the maximal breadth to the maximal length of the head, obtained by the formula: (breadth × 100)/length.
Synonym(s): length-breadth index.

cephalic index

an anthropological measurement obtained by dividing the maximum head width by the maximum length (back to front) and expressing it as a percentage.

The ratios of one index to another vary between populations and have been used in studies of race.

ce·phal·ic in·dex

(sĕ-falik indeks) Ratio of maximal breadth to maximal length of the head.

cephalic index

cephalic index

cephalic index

cephal′ic in′dex

cephalic index

index, cephalic:

cephalic index

Cephalic Index

Cephalic Index

cephalic index

cephalic index

index

ce·phal·ic in·dex

cephalic index

ce·phal·ic in·dex

cephalic index

ce·phal·ic in·dex

cephalic index

Synonyms for cephalic index

noun ratio (in percent) of the maximum breadth to the maximum length of a skull

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