linseed oil

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linseed oil, amber-colored, fatty oil extracted from the cotyledons and inner coats of the linseed. The raw oil extracted from the seeds by hydraulic pressure is pale in color and practically without taste or odor. When boiled or extracted by application of heat and pressure, it is darker and has a bitter taste and an unpleasant odor. Linseed oil has long been used as a drying oil in paints and varnish. It is also used in making linoleum, oilcloth, and certain inks.

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linseed oil Oil pressed from seeds of cultivated flax (Linum usitatissimum). Because of its drying qualities, linseed is an important ingredient of oil paints and printing inks, and is used to make varnish and linoleum.

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linseed oil Vegetable oil from the seeds of flax, Linum usitatissimum; rich in the essential fatty acid α‐linolenic acid.

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lin·seed oil • n. a pale yellow oil extracted from linseed, used esp. in paint and varnish.

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linseed oil See LINUM.