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Webster 1913 Edition

Noun.

(Eccl.)

An office or feast celebrated with less solemnity than the double ones. See

Noun.

, 8.

Adj.

(Bot.)

Having the outermost stamens converted into petals, while the inner ones remain perfect; – said of a flower.

semidouble ‎(not comparable)

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

semidouble ‎(plural semidoubles)

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