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.