noun
cryopreserved oocyte; frozen ovum
Medical and biological term for an egg cell that has been frozen for preservation, typically for fertility treatment or research.
冷凍卵子を用いた体外受精が成功した。
In vitro fertilization using a cryopreserved oocyte was successful.
彼女は将来の妊娠に備えて冷凍卵子を保存している。
She is storing frozen ova in preparation for a future pregnancy.
Compound of 冷凍 (reitō, 'freezing') and 卵子 (ranshi, 'ovum'). The term is a modern medical coinage reflecting advances in reproductive technology.