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lac
Definitions
[lak], (Noun)
Definitions:
- a resinous substance secreted as a protective covering by the lac insect, used to make varnish, shellac, sealing wax, dyes, etc.
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Origin
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late Middle English: from medieval Latin lac, lac(c)a, from Portuguese laca, based on Hindi lākh or Persian lāk
[lak], (Adjective)
Definitions:
- denoting the ability of normal strains of the bacterium E. coli to metabolize lactose, or the genetic factors involved in this ability (which is lost in some mutant strains)
(e.g: the lac operon)
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Origin
:
1940s: abbreviation of lactose
[lak], (Noun)
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[], (Abbreviation)
Definitions:
- (in the RAF) Leading Aircraftman or Leading Aircraftwoman
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definition by Oxford Dictionaries