Merriam-Webster[1]:
> b: the behavioral, cultural, or psychological traits typically associated with one sex
> c: GENDER IDENTITY
American Heritage Dictionary[2]:
> b. One's identity as female or male or as neither entirely female nor entirely male.
O.E.D.[3]:
> b. The state of being male or female as expressed by social or cultural distinctions and differences, rather than biological ones
[1]: https://www.merriam-webster.com/dictionary/gender
[2]: https://ahdictionary.com/word/search.html?q=gender
[3]: https://www.oed.com/viewdictionaryentry/Entry/77468
Merriam-Webster 2018 says, sense 1 abc [gramatical gender] but sense 2 is all about sex.
>2a SEX ...
>2b the behavioral, cultural, or psychological traits typically associated with one sex
http://web.archive.org/web/20181125203538/https://www.merria...
it doesn't mention gender identity, but gender identity is a perfectly good word for gender identity.
I don't have access to the OED here but I'm sure we'd see a similar timeline.
Merriam-Webster 2018 says, sense 1 abc [gramatical gender] but sense 2 is all about sex.
>2a SEX ...
>2b the behavioral, cultural, or psychological traits typically associated with one sex
http://web.archive.org/web/20181125203538/https://www.merria...
it doesn't mention gender identity, but gender identity is a perfectly good word for gender identity.
I don't have access to the OED here but I'm sure we'd see a similar timeline.