fraternal twin
noun
one of a pair of twins, not necessarily resembling each other, or of the same sex, that develop from two separately fertilized ova.
Compare
identical twin.
Origin of fraternal twin
First recorded in 1900–05
Words nearby fraternal twin
fratching,
frater,
fraternal,
fraternal insurance,
fraternal society,
fraternal twin,
fraternal twins,
fraternity,
fraternity house,
fraternize,
fratricide