双生児

Etymology
+

Noun

 * 1) twins

Derived terms

 * シャム双生児 (shamu sōseiji): Siamese twins
 * 結合双生児 (ketsugō sōseiji): conjoined twins
 * 一卵性双生児 (ichiransei sōseiji): identical twins
 * 二卵性双生児 (niransei sōseiji): fraternal twins