What does FTM mean in pride?

Could you please clarify for me the meaning of "FTM" within the context of pride? I've encountered this abbreviation in various discussions, but I'm still uncertain about its precise interpretation. Is it related to a specific community or movement? Does it have a deeper significance that goes beyond a simple acronym? Could you provide some examples or further context to help me better understand its usage and significance? Thank you for your assistance in clarifying this matter for me.