Category:Pyxidium

Pyx*id"i*um, n.; pl. Pyxidia. Etym: [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.