Mon`o*cot`y*le"don(?), n. [Mono- + cotyledon: cf. F. monocotyldone.] (Bot.) A plant with only one cotyledon, or seed lobe; a member of the Monocotyledonae.
The plural, monocotyledons, is used as the name of a large class of plants (the Monocotyledones, or Monocotyledonae), and is generally understood to be equivalent to the term endogens.
Monocotyledonesprop. n. A class of plants comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: grasses; lilies; palms; and orchids. It is divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae.
Syn. -- class Monocotyledones, Monocotyledonae, class Monocotyledonae, Liliopsida, class Liliopsida.
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