a silvery metallic element belonging to group 3 (formerly IIIA) of the periodic table and often considered to be one of the lanthanoids; a.n. 57; r.a.m. 138.91; r.d. 6.146 (20°C); m.p. 921°C; b.p. 3457°C, keemiline element, lantanoid, hõbevalge metall, sulamistemperatuur 920 ºC, tihedus 6,16 Mg/m3
