異性 [ㄧˋ ㄒㄧㄥˋ; yi4 xing4]
the opposite sex
of the opposite sex
heterosexual
different in nature
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異性
いせい
noun (common) (futsuumeishi)
nouns which may take the genitive case particle `no'
see: 同性
the opposite sex
chemistry term
isomerism
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