amphidiploid

[ am-fi-dip-loid ]
/ ˌæm fɪˈdɪp lɔɪd /

noun Biology.

a plant having the sum of the chromosome numbers of two parental species, owing to the doubling of the chromosomes in a hybrid of two species.

Origin of amphidiploid

First recorded in 1925–30; amphi- + diploid

British Dictionary definitions for amphidiploid

amphidiploid
/ (ˌæmfɪˈdɪplɔɪd) /

noun

a plant originating from hybridization between two species in which the chromosome number is the sum of the chromosome numbers of both parental species. It behaves as an independent species