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noun
An instrument, a kind of hydrometer, for determining the density (and therefore purity) of various commercial oils, like those from marine animals, at a certain temperature.
Definition source: English Wiktionary via Wiktextract
Usage: historical
Topics: chemistry, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From oleo- + -meter.
