[py.ro.lu.site] n [G Pyrolusit, fr. Gk pyr- + lousis washing, fr. louein to wash--more at lye] (1828): a mineral consisting of manganese dioxide that is of an iron-black or dark steel-gray color and metallic luster, is usu. soft, and is the most important ore of manganese
PYROLUSITE
Meaning of PYROLUSITE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012