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

San Diego, for instance, has several male-dominated military bases, which is reflected in the sex ratio.

From Washington Times • Dec. 15, 2023

At the Heron Island study site, the sex ratio is currently more balanced than nearer the equator, with two to three females hatching for every male.

From Science Daily • Nov. 13, 2023

In fact, deceased female individuals were rarely related to either family tree, and there was an unbalanced sex ratio among the remains found on the site, suggesting that most of the adult daughters were absent.

From Scientific American • Aug. 10, 2023

In a 2017 review of dozens of studies, researchers from Britain estimated that the true sex ratio was closer to 3 to 1.

From New York Times • Apr. 10, 2023

If the sex ratio were near unity, then, with 92 men 40 years or younger, there must have been 47 men over that age and 135 women of all ages.

From The Aboriginal Population of the San Joaquin Valley, California by Cook, Sherburne F.