Red phosphorus(redirected from amorphous phosphorus)
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|(Chem.)||an allotropic modification of phosphorus, obtained as a dark red powder by heating ordinary phosphorus in closed vessels. It is not poisonous, is not phosphorescent, and is only moderately active chemically. It is valuable as a chemical reagent, and is used in the composition of the friction surface on which safety matches are ignited.|
|(Chem.)||See under Phosphorus.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.