Pyxidium
Pronunciation : Pyx*id"i*um
Part of Speech : n.;
Etymology : [NL., fr. Gr. 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.
Definition :
pl. Pyxidia.
Source : Webster's Unabridged Dictionary, 1913