Pȳ-rŏs'ma-līte, n.

(49), n. [Gr. πῦρ, πυρός, fire, and ὀσμή, odor.] (Min.) A mineral usually of a pale brown, or of a gray or grayish-green color, consisting chiefly of the hydrous silicate of iron and manganese;—so called from the odor given off before the blow-pipe. Dana.