sex ratio

American  

noun

Sociology.

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

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Etymology

Origin of sex ratio

First recorded in 1905–10

Example Sentences

Sex ratio: This entry includes the number of males for each female in five age groups—at birth, under 15 years, 15-64 years, 65 years and over, and for the total population.

From The 1999 CIA World Factbook by United States. Central Intelligence Agency

Sex ratio of opossums trapped was approximately 1:1; 59 males to 58 females.

From Ecology of the Opossum on a Natural Area in Northeastern Kansas by Fitch, Henry S.

Sex ratio: This entry includes the number of males for each female in five age groups-at birth, under 15 years, 15-64 years, 65 years and over, and for the total population.

From The 1998 CIA World Factbook by United States. Central Intelligence Agency