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

See Examples For:

sex ratio

While their capacity for male pregnancy has long fascinated people, new information on sex ratio and pregnancy seasonality has been discovered by, well, you.

From Science Daily ● Mar. 25, 2024

At birth, the sex ratio in the U.S. has historically been 105 men for every 100 women.

From Washington Times ● Dec. 15, 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 four years, the sex ratio in the village improved from 37 girls/63 boys per hundred newborns to 51 girls/49 boys, according to government health records.

From New York Times ● Aug. 4, 2023

Regardless of cause, however, we may calculate that in the absence of this male mortality and with a normal sex ratio of approximately unity the population would have been twice the female number or 718.

From The Aboriginal Population of the North Coast of California by Cook, Sherburne Friend