noun
fertility; ability to conceive
Medical and formal term for the biological capacity to become pregnant. In everyday conversation, 妊娠しやすさ or 妊娠する力 are more common.
加齢とともに受胎能力は低下する。
Fertility declines with age.
この治療は受胎能力を改善する可能性がある。
This treatment may improve the ability to conceive.
Compound of 受胎 (conception) and 能力 (ability). The exact historical derivation is uncertain, but the components are transparent.