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Webster 1913 Edition

Noun.

[

Methyl

ene +

cohol.]

(Chem.)

A light, volatile liquid,

H2C(OCH3)2

, regarded as a complex ether, and having a pleasant ethereal odor. It is obtained by the partial oxidation of methyl alcohol. Called also

formal

methylal ‎(countable and uncountable, plural methylals)