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The Collaborative International Dictionary
Aroideous

Aroid \A"roid\, Aroideous \A*roid"e*ous\, a. [Arum + -oid.] (Bot.) Belonging to, or resembling, the Arum family of plants ( Araceae).

Syn: araceous

Wiktionary
aroideous

a. (context botany English) Of or relating to the aroids.