shark oil

Thân thiện

A worker applies shark oil to a leather saddle.

Definition

Noun: - A fatty, yellow to brown oil obtained from the livers of sharks. It is historically used for dressing and waterproofing leather and as a dietary source of vitamin A.

Usage

• As a substance/material: "Shark oil" is used as a noun to refer to the extracted oil itself.
  • Traditional tanners once used shark oil to treat hides.
  • The supplement was derived from shark oil.

Advanced Usage

• Historical/Industrial Context: The term is primarily used in historical, industrial, or nutritional contexts, as modern alternatives have largely replaced its use.
  • The old recipe for waterproofing the sail called for shark oil.

Variants and Related Words

• Shark liver oil: A more precise technical term often used interchangeably with "shark oil," specifically indicating the liver as the source.
• Squalene: A natural organic compound originally obtained from shark liver oil, now also sourced from plants.

Synonyms

• Shark liver oil

Notes on Meaning

This term refers specifically to the oil from shark livers. It is not used to describe oil from other parts of a shark or for other types of fish oil (e.g., cod liver oil). Its primary associations are with historical leatherworking and as a former source of vitamin A.

Học thuật

Noun

1. a fatty yellow to brown oil obtained from the livers of sharks; used for dressing leather and as a source of vitamin A

Từ đồng nghĩa

• shark-liver oil