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Of or belonging to the iris family (Iridaceae).

[From New Latin Īridāceae, iris family, from Īris, Īrid-, type genus, from Latin īris, iris; see iris.]


(ˌɪrɪˈdeɪʃəs; ˌaɪ-)
(Botany) of, relating to, or belonging to the Iridaceae, a family of monocotyledonous plants, including iris, crocus, and gladiolus, having swordlike leaves and showy flowers
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Adj.1.iridaceous - of or pertaining to or characteristic of plants of the family Iridaceae
References in periodicals archive ?
Gerber's diction can be quirky, even a little obtuse: words like "alembic" and "eremite" and "iridaceous" seem dropped into poems that otherwise have the vocabulary level of high-school English.
The scientific name of saffron is carcussitous and it placed in iridaceous family.
If you have a large collection of Gladioli or other 'iridaceous' plants, get spraying.