Home › Words › T › transitionertransitionertransitioner means one who transitions.Among words judged in Lexicurio's Arena, transitioner ranks #13,043 of 42,806 for Qualifying.EtymologyFrom transition + -er.nounOne who transitions.e.g.“Before clinical intervention is offered, the intending transitioner must live as a person of the intended gender for a period of a year.” — 2012, Julie Fish, Social Work with Lesbian, Gay, Bisexual and Trans People:Definitions & examples from Wiktionary (CC BY-SA 3.0).