(n.) A rare metallic element, discovered in certain ores of zinc, by means of its characteristic spectrum of two indigo blue lines; hence, its name. In appearance it resembles zinc, being white or lead gray, soft, malleable and easily fusible, but in its chemical relation it resembles aluminium or gallium. Symbol In. Atomic weight, 113.4.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Indium. Retrieved September 20, 2026, from http://smartdefine.org/indium/definitions/2020945 |
| Chicago | Webster's. 2011. "Indium" http://smartdefine.org/indium/definitions/2020945 (accessed September 20, 2026). |
| Harvard | Webster's 2011, Indium, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/indium/definitions/2020945>. |
| MLA | Webster's. "Indium" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/indium/definitions/2020945> |