LGBT or GLBT is an initialism that stands for lesbian, gay, bisexual, and transgender. In use since the 1990s, the term is an adaptation of the initialism LGB, which was used to replace the term gay in reference to the LGBT community beginning in the mid-to-late 1980s.Activists believed that the term gay community did not accurately represent all those to whom it referred.ome intersex people who want to be included in LGBT groups suggest an extended initialism LGBTI. This initialism is used in all parts of The Activist's Guide of the Yogyakarta Principles in Action. Some people combine the two acronyms and use the term LGBTIQ.