- 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.
- 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
![Amphidiploid (noun) Definition, Meaning & Examples Amphidiploid (noun) Definition, Meaning & Examples](https://alldefinitions.org/font/uploads/amphidiploid.jpg)