LGBTQ is a short form or acronym that means:

“L”esbian
“G”ay
“B”isexual
“T”ransgender,
“Q”ueer or “Q”uestioning

People often use LGBTQ to mean all of the communities included in the “LGBTTTQQIAA”

“L”esbian
“G”ay
“B”isexual
“T”ransgender
“T”ranssexual
”T”wo-spirited
“Q”ueer
“Q”uestioning
“I”ntersex
“A”sexual
“A”lly

LGBTQ is the more commonly used term in the community; possibly because it is more user friendly!