polyembryony
noun
poly·em·bry·o·ny ˌpä-lē-ˈem-brē-ə-nē 
-(ˌ)em-ˈbrī-
-(ˌ)em-ˈbrī- 1
: the condition of having several embryos
2
: the production of two or more embryos from one ovule or egg
polyembryonic
ˌpä-lē-ˌem-brē-ˈä-nik
adjective 
Word History
Etymology
poly- + embryon-, stem in combination of embryo + -y entry 2
First Known Use
1849, in the meaning defined at sense 1
Medical Definition
polyembryony
noun
poly·em·bry·o·ny -ˈem-brē-ə-nē -(ˌ)em-ˈbrī-
-(ˌ)em-ˈbrī- plural polyembryonies
: the production of two or more embryos from one ovule or egg