Liliopsida
WordNet
noun
(1) Comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids; divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae
WiktionaryText
Proper noun
Liliopsida
- a taxonomic class, within division Magnoliophyta - the lilies and other monocotyledons