- (n.) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish brown color. Called also sparry iron, spathic iron.
- (n.) Formerly, magnetic iron ore or loadstone.
- (n.) An indigo-blue variety of quartz.
- (n.) A meteorite consisting solely of metallic iron.
- (n.) Any plant of the genus Sideritis; ironwort.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). siderite. Retrieved September 21, 2026, from http://smartdefine.org/siderite/definitions/2061864 |
| Chicago | Webster's. 2011. "siderite" http://smartdefine.org/siderite/definitions/2061864 (accessed September 21, 2026). |
| Harvard | Webster's 2011, siderite, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/siderite/definitions/2061864>. |
| MLA | Webster's. "siderite" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/siderite/definitions/2061864> |