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  1. a white, crystalline, water-soluble powder, C6H12N4, used as a vulcanization accelerator, an absorbent in gas masks, in the manufacture of the explosive RDX and synthetic resins, and in medicine as a diuretic and urinary antiseptic.

Origin of hexamethylenetetramine

First recorded in 1885–90; hexamethylene + tetr(a)- + -amine
Also called hex·a·mine [hek-suh-meen] /ˈhɛk səˌmin/, methenamine.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hexamethylenetetramine


  1. a colourless crystalline organic compound used as a urinary antiseptic. Formula: C 6 H 12 N 4Also called: hexamine, methenamine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012