Definition of omega-3 in English:

omega-3

(also ω-3)

adjective

Biochemistry
  • Designating unsaturated fatty acids whose molecules have a double bond between the carbon atoms that are third and second from the end of the hydrocarbon chain. Also written ω-3.

noun

Biochemistry
  • An omega-three fatty acid.

Origin

1960s; earliest use found in Journal Nutrition. From omega + three [noun], ω being the symbol of the terminal carbon atom in a fatty acid molecule.

Pronunciation

omega-3

/ˌəʊmɪɡəˈθri/