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1.
The practice of favoring gays or lesbians, especially in the workplace.
I didn't get my vacation time accepted because of the homoism that exists in upper management.
by Fugave February 07, 2011
 
2.
The act or behavior of acting like a homo. A mannerism type that indicates the sexual preference for that person.
Mark's homoism disturbs me since he wears pink pants and flowers in his hair.
by Kena May 05, 2006