1. (noun)pyxidium, pyxis fruit of such plants as the plantain; a capsule whose upper part falls off when the seeds are released Synonyms: pyxis, pyxidium
2. (noun)Pyxis a constellation in the southern hemisphere near Puppis and Antlia Synonyms: pyxidium
3. (noun)pyxis a small box used by ancient Greeks to hold medicines Synonyms: pyxidium