infertility; sterility
Primarily used in veterinary or biological contexts for animals; also applicable to plants or soil. In human medicine, 不妊症 (ふにんしょう) is more common.
This breed of cattle is known for its high infertility.
Crops are difficult to grow in infertile soil.
不妊 is a broader term meaning infertility or sterility, used for both humans and animals, while 不妊性 emphasizes the property or condition of being infertile.
Compound of 不妊 (ふにん, 'infertility') + 性 (せい, '-ity, -ness'), forming a noun meaning 'the state or property of being infertile'.