sex-based

The word is a modern English compound adjective formed in the 20th century. The first element, "sex," traces back to Latin sexus, whose precise origin is uncertain but is thought to relate to division or section, reflecting the binary categorization of male and female. The second element, "based," derives from the verb "base," which entered English via French from Latin basis (foundation, pedestal), itself borrowed from Greek basis (a step, pedestal). Combined, "sex-based" literally means "having sex as its foundation," a logical construction where the ancient concept of a foundational support (basis) is applied to the modern sociological and legal concept of differentiation by biological sex.

Structure: sex (biological category) + based (having as a foundation) - sex: From Latin sexus (state of being male or female, gender). Functions as the core noun element specifying the category of distinction. - based: From the English verb base (to establish on a foundation) + the past participle suffix -ed. Functions as an adjective-forming element meaning "having as a basis or foundation."