Word Study
calyptra
CIDE DICTIONARY
calyptra, n. [NL., fr. Gr. kaly`ptra a covering for the head, fr. kaly`ptein to cover.].
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]
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