Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “sex”


noun [C/U] (MALE OR FEMALE)   /seks/
the state of being either male or female, or all males or all females considered as a group; gender: [C] List the name, age, and sex of each of your children. [U] Employment discrimination on the basis of sex is illegal.
(Definition of sex noun (MALE OR FEMALE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of sex

Definitions of “sex” in other dictionaries

Word of the Day

limber up

to do gentle exercises to stretch the muscles in order to prepare the body for more active physical exercise

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More