双生児(そうせいじ)

そうせいじ
noun
twins
formalmedicalfamily
1. twins; twin
Two children born to the same mother at one birth. A formal, technical word; everyday speech uses 双子(ふたご).
To study identical twins.
Twins are often studied in genetic research.
一卵性(いちらんせい)双生児(そうせいじ)と二卵性(にらんせい)双生児(そうせいじ)では、遺伝子(いでんし)の共通(きょうつう)度(ど)が異(こと)なる。
Identical twins and fraternal twins differ in how much of their genes they share.

A formal, scholarly term of Chinese-character origin: 双(そう) (pair) + 生(せい) (birth) + 児(じ) (child). Used in medical, academic, and legal contexts; ordinary conversation uses 双子(ふたご).

Common collocations

Similar words