am·phi·ploid I. \ˈ ̷ ̷ ̷ ̷ˌplȯid\adjective Etymology:amphi- + -ploid of an interspecific hybrid: having at least one complete diploid set of chromosomes derived from each ancestral species — compare amphidiploid • am·phi·ploi·dy\-ȯidē\noun-es II. noun (-s) : an amphiploid individual or strain