Found 2 items, similar to Pyxidium.
English → English (WordNet)
Definition: pyxidium
pyxidium
n : fruit of such plants as the plantain; a capsule whose upper
part falls off when the seeds are released [syn: 
pyxis]
[also: 
pyxidia (pl)]
English → English (gcide)
Definition: Pyxidium
Pyxidium 
\Pyx*id"i*um\, n.; pl. 
Pyxidia. [NL., fr. Gr. ?, dim.
a ? a box. See 
Pyx.] (Bot.)
(a) A pod which divides circularly into an upper and lower
half, of which the former acts as a kind of lid, as in
the pimpernel and purslane.
(b) The theca of mosses.
[1913 Webster]