[mass noun](Botany)the ripening of the stamens and pistils of a flower at different times, so that self-fertilization is prevented (植)雌雄(蕊)异熟。 比较 homogamy(义项 3)
派生 dichogamous adjective 语源
mid 19th cent.: from Greek dikho- 'apart, in two' + gamos 'marriage'