Definition of gayby boom in English:

gayby boom

noun

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.

Pronunciation

gayby boom

/ˈɡeɪbi ˌbuːm/