Etymology
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formaldehyde (n.)

pungent gas formed by oxidation of methyl alcohol, 1869, a contraction of formic aldehyde; see formic + aldehyde. Discovered in 1863 by German chemist August Wilhelm von Hofmann (1818-1892).

updated on October 16, 2012

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Definitions of formaldehyde from WordNet

formaldehyde (n.)
a colorless poisonous gas; made by the oxidation of methanol;
Synonyms: methanal
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.