Etymology
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sexuality (n.)

1789, "action or fact of being sexed or having distinctions between the sexes;" see sexual + -ity. Meaning "capability of sexual feelings" is from 1879. Meaning "(one's) sexual identity" is by 1980.

According to a strict biological definition sexuality is the characteristic of the male and female reproductive elements (genoblasts), and sex of the individuals in which the reproductive elements arise. A man has sex, a spermatozoon sexuality. [Albert H. Buck, M.D., ed., "Reference Handbook of the Medical Sciences," 1894]

updated on July 12, 2022

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Definitions of sexuality from WordNet

sexuality (n.)
the properties that distinguish organisms on the basis of their reproductive roles;
Synonyms: sex / gender
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.