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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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.iridaceous - of or pertaining to or characteristic of plants of the family Iridaceae
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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.