How Do You Spell ZYGOMATICOAURICULAR INDEX?

Pronunciation: [zˌa͡ɪɡəmˌatɪkˌə͡ʊjuːɹˈɪkjʊləɹ ˈɪndɛks] (IPA)

The zygomaticoauricular index is a measure used in forensic anthropology to determine the race of an individual. The correct spelling of this word is /zaɪɡəˌmætɪkəʊɔːˌrɪkjʊlər ˈɪndeks/, with emphasis on the second syllable of "zygomatico" and the third syllable of "auricular". The word is spelled using the International Phonetic Alphabet (IPA), which is used to represent the sounds of language. The IPA is a helpful tool for understanding unfamiliar words and their pronunciation.

ZYGOMATICOAURICULAR INDEX Meaning and Definition

1. The zygomaticoauricular index is a quantitative measurement used in the field of anthropology to determine the degree of projection of the zygomatic bone in relation to the external acoustic meatus. Specifically, it refers to the ratio or index calculated between the width of the zygomatic bone and the distance between the external auditory opening and the cranial midpoint.

   The zygomatic bone, also known as the cheekbone, is a key facial bone located near the upper part of the maxilla and below the eye socket. The external acoustic meatus, commonly referred to as the ear canal, is the tube-like structure leading from the outer ear to the eardrum. By assessing the zygomaticoauricular index, anthropologists can estimate the relative degree of facial prominence or projection of the zygomatic bone in an individual or a population.

   This index is typically calculated by measuring the maximum width of the zygomatic bone and the distance between the external acoustic meatus and the midpoint of the cranium. The resulting ratio provides information about the level of zygomatic projection, with higher values indicating greater facial prominence and lower values indicating less projection.

   The zygomaticoauricular index is particularly useful in studying variations in facial anatomy among different populations and ethnic groups, as well as in identifying potential patterns of evolution or adaptation related to facial structure. It can contribute to a better understanding of anatomical variation and its implications in fields such as forensic anthropology, human identification, and evolutionary biology.

2. The ratio between the zygomatic and the auricular diameters of the skull.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

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Etymology of ZYGOMATICOAURICULAR INDEX

The word "zygomaticoauricular index" is a scientific term that combines several elements:

1. Zygomatico-: This prefix comes from the word "zygomatic", which refers to the zygomatic bone. The zygomatic bone is commonly known as the cheekbone, as it forms part of the prominence of the cheek. The term "zygomatico-" is used to indicate a relationship with or connection to this bone.

2. Auricular: This term is derived from the Latin word "auricula", which means "ear". It is used to refer to the ear or any structure related to the ear.

3. Index: In this context, "index" refers to a measurement or ratio used to quantify or compare certain characteristics. It is often used in scientific contexts to describe various measurements or values.