noun
hybrid sterility; hybrid incompatibility
A medical/biological term referring to the inability of hybrids to produce viable offspring.
雑種不稔性は、異なる種間の交雑でよく見られる現象だ。
Hybrid sterility is a phenomenon often observed in crosses between different species.
Compound of 雑種 (hybrid) + 不稔性 (sterility). The exact historical derivation is uncertain; the spelling is conventionally associated with the medical meaning.