1.
twins; twin
Two children born to the same mother at one birth. A formal, technical word; everyday speech uses 双子.
一卵性双生児を研究する。
To study identical twins.
双生児は遺伝の研究でよく扱われる。
Twins are often studied in genetic research.
一卵性双生児と二卵性双生児では、遺伝子の共通度が異なる。
Identical twins and fraternal twins differ in how much of their genes they share.
A formal, scholarly term of Chinese-character origin: 双 (pair) + 生 (birth) + 児 (child). Used in medical, academic, and legal contexts; ordinary conversation uses 双子.
COMMON COLLOCATIONS:
- 一卵性双生児: identical (monozygotic) twins
- 二卵性双生児: fraternal (dizygotic) twins
- 双生児研究: twin study
SIMILAR WORDS:
- 双子: twins — the everyday word; 双生児 is its formal counterpart
- 三つ子: triplets — three children born together