dizygotic
adjective
di·zy·got·ic ˌdī-(ˌ)zī-ˈgä-tik 
variants or less commonly dizygous
(ˌ)dī-ˈzī-gəs
of twins
: fraternal sense 2
Example Sentences
Recent Examples on the Web The surges in twin births occurred only in fraternal twins, or dizygotic twins, where two eggs were separately fertilized. 
Elizabeth Gamillo, Smithsonian Magazine, 16 Mar. 2021 The rate of fraternal (or dizygotic) twins tends to rise with the use of certain fertility assistance drugs. Brian Clark Howard, National Geographic, 2 Sep. 2016
Elizabeth Gamillo, Smithsonian Magazine, 16 Mar. 2021 The rate of fraternal (or dizygotic) twins tends to rise with the use of certain fertility assistance drugs. Brian Clark Howard, National Geographic, 2 Sep. 2016 Word History
First Known Use
1916, in the meaning defined above
Medical Definition
dizygotic
adjective
di·zy·got·ic ˌdī-zī-ˈgät-ik
variants also dizygous
(ˈ)dī-ˈzī-gəs
of twins
: fraternal