[pseu.do.po.di.um] n, pl -po.dia [NL] (1854) 1: a temporary protrusion or retractile process of the cytoplasm of a cell that functions (as in an amoeba) esp. in a locomotor or food gathering capacity--see amoeba illustration
2: a slender leafless branch of the gametophyte in various mosses that often bears gemmae