hemiacetal
hemi·ac·e·tal
noun \ˌhe-mē-ˈa-sə-ˌtal\Definition of HEMIACETAL
: any of a class of compounds characterized by the grouping C(OH)(OR) where R is an alkyl group and usually formed as intermediates in the preparation of acetals from aldehydes or ketones
First Known Use of HEMIACETAL
1893
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