Calyptra

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Calyptra \Ca*lyp"tra\ (k[.a]*l[i^]p"tr[.a]), n. [NL., fr. Gr.
     kaly`ptra a covering for the head, fr. kaly`ptein to cover.]
     (Bot.)
     A little hood or veil, resembling an extinguisher in form and
     position, covering each of the small flasklike capsules which
     contain the spores of mosses; also, any similar covering


     body.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  calyptra
       n : the hood or cap covering the calyx of certain plants: e.g.,
           the California poppy