いうせい

Japanese
For pronunciation and definitions of いうせい – see the following entries.
【遊星ゆうせい】
[noun] Synonym of 惑星 (wakusei): planet
【優性ゆうせい】
[noun] (biology, genetics, until 2017) dominance
(This term, いうせい, is a historical kana spelling of the above terms.)
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