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

This is the first time the sex ratio has tipped in favour of females.

From Quartz

India’s decades-long efforts to improve the sex ratio may be finally bearing fruit.

From Quartz

Such movements are revealed by trapping procedures that yield deviations from the expected 1:1 sex ratio.

From Project Gutenberg

Of course, such hiatuses are to be expected; even in man such enigmas as the disparate sex ratio still challenge the investigator.

From Project Gutenberg

I regard the summer sex ratio as a distorted one, brought about by the greater activity of the males in the breeding season.

From Project Gutenberg

Judging from trends in the small samples available, sex ratio in hatchlings is approximately 1:1.

From Project Gutenberg

Even the sex ratio of adult deer killed in wolf-free areas shows a preponderance of males (Erickson et al. 1961).

From Project Gutenberg