'Monocotyledonous' definitions:

Definition of 'monocotyledonous'

(from WordNet)
adjective
(of a flowering plant) having a single cotyledon in the seed as in grasses and lilies [ant: dicotyledonous]

Definition of 'Monocotyledonous'

From: GCIDE
  • Monocotyledonous \Mon`o*cot`y*le"don*ous\, a. [Cf. F. monocotyl['e]don['e].] (Bot.) Having only one cotyledon, seed lobe, or seminal leaf. --Lindley. [1913 Webster]