| Pronunciation: | for'maldu`hId | ||
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 WordNet Dictionary | |||
| Definition: | [n] a colorless poisonous gas; made by the oxidation of methanol | ||
| Synonyms: | methanal | ||
| See Also: | aldehyde, gas | ||
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| Webster's 1913 Dictionary | |||
| Definition: | \For*mal"de*hyde\, n. [Formic + aldehyde.] (Chem.) A colorless, volatile liquid, {H2CO}, resembling acetic or ethyl aldehyde, and chemically intermediate between methyl alcohol and formic acid. | ||
| Dream Dictionary | |||
| Definition: | Seeing or using formaldehyde in your dream, refers to something that you are holding to for too long. You need to let go of the past and quit dwelling on old emotions. | ||
| Biology Dictionary | |||
| Definition: | A type of aldehyde which has another hydrogen attached to the carbon as the second group. (An aldehyde is a carbon double-bonded to an oxygen and single bonded to one hydrogen and one other chemical group). | ||
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