sex ratio

sex ratio

noun Sociology.
the proportional distribution of the sexes in a population aggregate, expressed as the number of males per 100 females.

Origin:
1905–10

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American Heritage
Medical Dictionary

sex ratio n.

  1. The proportion of males to females in a given population, usually expressed as the number of males per 100 females at a specific stage in life, especially at conception, birth, and a given stage between birth and death.

  2. The ratio of the numbers of males to females affected by a particular disease or trait.

The American Heritage® Stedman's Medical Dictionary
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