A marked increase in the number of children brought up by homosexuals, especially using means such as adoption, artificial insemination, surrogacy, etc.
Origin
1990s; earliest use found in Newsweek. From gayby + boom, after baby boom.
Definition of gayby boom in US English:
gayby boom
nounˈɡeɪbi ˌbuːm
US informal
A marked increase in the number of children brought up by homosexuals, especially using means such as adoption, artificial insemination, surrogacy, etc.
Origin
1990s; earliest use found in Newsweek. From gayby + boom, after baby boom.