(n) one of four subclasses or superorders of Monocotyledones; comprises 17 families including: Liliaceae; Alliaceae; Amaryllidaceae; Iridaceae; Orchidaceae; Trilliaceae, Syn. subclass Liliidae
prop. n. one of four subclasses or superorders of Monocotyledones; it comprises 17 families including: Liliaceae; Alliaceae; Amaryllidaceae; Iridaceae; Orchidaceae; Trilliaceae. Syn. -- subclass Liliidae. [ WordNet 1.5 ]