twin pregnancy; twin fetuses
Medical term for a pregnancy with two fetuses, or the twin fetuses themselves. In everyday contexts, 双子 (ふたご) is more common.
She was diagnosed with a twin pregnancy by ultrasound.
A twin pregnancy carries higher risks than a singleton pregnancy.
twin pregnancy
twin-to-twin transfusion syndrome; TTTS
From 双 (twin, pair) + 胎 (womb, fetus). A Sino-Japanese medical compound.