Dictionary

cod–liver oil

noun

: an oil from the liver of cod that is used in medicine as a source of vitamin A and D

Full Definition of COD-LIVER OIL

:  an oil obtained from the liver of the cod and closely related fishes and used as a source of vitamins A and D
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First Known Use of COD-LIVER OIL

1783
Medical Dictionary

cod–liver oil

noun

Medical Definition of COD–LIVER OIL

:  a pale yellow fatty oil obtained from the liver of the cod (Gadus morhua) and related fishes and used in medicine (as in the prophylaxis of rickets) chiefly as a source of vitamins A and D—compare fish-liver oil

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