A formal term for one's internal sense of gender. Often used in medical, psychological, and social contexts. Synonymous with 性同一性 (せいどういつせい).
See also: 性同一性
Gender identity does not necessarily match one's physical sex.
This survey includes questions about gender identity.
Compound of 性 (せい, 'gender/sex') and 自認 (じにん, 'self-acknowledgment'). The exact origin is uncertain, but it likely emerged in modern Japanese as a translation of the English term 'gender identity'.