calyptra

2 definitions found

calyptra - Collaborative International Dictionary of English v.0.48 :

  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]

calyptra - WordNet (r) 2.1 (2005) :

  calyptra
      n 1: the hood or cap covering the calyx of certain plants: e.g.,
           the California poppy