What each letter stands for:
Gay: A man who is romantically and/or sexually attracted to other men
Bisexual: A person who is romantically and/or sexually attracted to more than one gender
Transgender: An umbrella term for people whose gender identity differs from the sex they were assigned at birth
Queer or Questioning: "Queer" is an umbrella term for sexual and gender minorities, and "questioning" refers to people exploring their sexual orientation or gender identity
Intersex: A term for people born with variations in sex characteristics, such as chromosomes, gonads, or genitals, that don't fit typical definitions of male or female
Asexual: A person who experiences little to no romantic attraction. The "A" can also stand for Aromantic (lacks romantic attraction) or Agender (doesn't identify with a gender)
+ (Plus): Signifies that there are many other sexual orientations and gender identities not included in the acronym, such as pansexual, Two-Spirit, and others