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1. WordNet® 3.0 (2006) | ||
indium n 1: a rare soft silvery metallic element; occurs in small quantities in sphalerite [syn: indium, In, atomic number 49] | ||
2. The Collaborative International Dictionary of English v.0.48 | ||
Indium \In"di*um\, n. [NL. See Indigo.] (Chem.) A rare metallic element, of atomic number 49, 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 (valence +3). Symbol In. Atomic weight, 114.82. [1913 Webster +PJC] | ||
3. The Elements (07Nov00) | ||
indium Symbol: In Atomic number: 49 Atomic weight: 114.82 Soft silvery element belonging to group 13 of the periodic table. The most common natural isotope is In-115, which has a half-life of 6*10^4 years. Five other radioisotopes exist. Discovered in 1863 by Reich and Richter. | ||
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