sex ratio

noun

, Sociology.

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

Word History and Origins

Origin of sex ratio¹

First recorded in 1905–10

Example Sentences

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

In addition to vessel strikes and entanglement in fishing gear, which are the primary causes of death or injury to right whales, low female survival, a male-dominated sex ratio, and low calving rates are contributing to the population’s current decline.

From Seattle Times

Her county has a low sex ratio, which means there are more women than men.

From Washington Times

The sex ratio numbers don’t reflect sexual preference, gender identity or whether those surveyed are looking for partners.

From Washington Times

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

From Washington Times