Of, relating to, or having a sexual orientation to persons of the same sex.(adjective)
Usage Problem A homosexual person; a gay man or a lesbian.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "homosexual" in a sentence
"Any person considering making a valid challenge on these grounds would look up the actual study and learn how the term homosexual was defined in the cited study."
"As I don't regularly hang around the gay community I also didn't realize that the term homosexual is now a perjorative description."
"When you look at the case he's really suing because the term homosexual is listed as a sin."