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paraformaldehyde

[ par-uh-fawr-mal-duh-hahyd, -fer- ]

noun

, Chemistry.
  1. a white, crystalline polymer of formaldehyde, (HCOH) n , from which it is obtained by evaporation of the aqueous solution: used chiefly as an antiseptic.

paraformaldehyde

/ ˌpærəfɔːˈmældɪˌhaɪd /

noun

  1. a white amorphous solid polymeric form of formaldehyde: used as a convenient source of formaldehyde and as a fumigant. Formula: (CH 2 O) n , where n lies between 6 and 50
“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
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Word History and Origins

Origin of paraformaldehyde1

First recorded in 1930–35; para- 1 + formaldehyde
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