Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
Any of a class of compounds of general formula R1R2C(OH)OR' (where R' is not H and R1 or R2 is often hydrogen).
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: organic compound
History
Etymology tree Proto-Indo-European *sem- Proto-Indo-European *sēmi Ancient Greek ἡμῐ- (hēmĭ-)lbor. English hemi- English acetal English hemiacetal From hemi- + acetal.
