GLBTI en · ADJ Pronunciation /d͡ʒiː ɛl biː tiː ˈaɪ/ Meanings (abbreviation, alt-of, initialism) Initialism of gay, lesbian, bisexual, transgender/transsexual and intersex; alternative form of LGBTI. alt of bisexualalt of gayalt of lesbianalt of transgender/transsexual and intersex