monocotyledon(n = noun.plant) endogen, liliopsid, monocot - a monocotyledonous flowering plant; the stem grows by deposits on its inside;
is a kind of angiosperm, flowering plant
is a member of class liliopsida, class monocotyledonae, class monocotyledones, liliopsida, monocotyledonae, monocotyledones
Derived form adjective monocotyledonous₁

   A plant with only one cotyledon, or seed lobe; a member of the Monocotyledonae. [1913 Webster]
" 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." [1913 Webster]

monocotyledon, n. Bot. any flowering plant with a single cotyledon.

Derivative:
monocotyledonous adj.