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EnglishEdit

EtymologyEdit

semi- +‎ double

AdjectiveEdit

semidouble (not comparable)

  1. (botany, of a flower) Having the outermost stamens converted into petals, while the inner ones remain perfect.

NounEdit

semidouble (plural semidoubles)

  1. An ecclesiastical office or feast celebrated with less solemnity than the double feasts.