Definition

1. Noun:
   • A medicinal oil extracted from the livers of codfish and similar species: It is a dietary supplement consumed orally, valued primarily as a rich natural source of vitamins A and D.

Usage Examples

• Noun:
  • My grandmother used to take a spoonful of cod-liver oil every morning for her health.
  • Before synthetic vitamins were common, cod-liver oil was a primary way to prevent deficiencies.

Advanced Usage

• Historical/Medical Context: The term is often used in historical or nutritional contexts to discuss traditional remedies and sources of essential nutrients.
  • In the early 20th century, cod-liver oil was routinely administered to children to prevent rickets.

Variants and Related Words

• Cod oil: A less common, more general term that may refer to oil from the whole codfish body, not specifically the liver. It is not a direct synonym for the medicinal "cod-liver oil."
• Fish oil: A broader category that includes oils from various fish tissues; cod-liver oil is a specific type of fish oil.

Synonyms

• None (Highly Specific): As a specific substance, it has no perfect synonyms. Descriptive phrases like "liver oil from cod" or "vitamin-rich fish oil" can convey a similar meaning in context.

Related Phrases

• "A dose of cod-liver oil": Often used metaphorically to describe something unpleasant but necessary or beneficial.
  • The new tax policy is a bitter dose of cod-liver oil for the economy—hard to swallow but supposedly good in the long run.

Related Idioms

• None Directly: There are no common idioms that use the exact term "cod-liver oil." The metaphorical phrase above is an example of its figurative use.

Noun

1. an oil obtained from the livers of cod and similar fishes; taken orally as a source of vitamins A and D