The Collaborative International Dictionary of English v.0.48:
liliopsid \liliopsid\ n. A flowering plant. Syn: monocot, monocotyledon. [WordNet 1.5]WordNet (r) 3.0 (2006):
liliopsid n 1: a monocotyledonous flowering plant; the stem grows by deposits on its inside [syn: monocot, monocotyledon, liliopsid, endogen]