Definition of deep green in English:

deep green

noun

  • 1A dark, intense green colour.

  • 2Originally and chiefly British. A person who is deeply committed to environmental causes or who holds radical or extreme ‘green’ views. In plural (often): a faction adhering to such views within a larger environmentalist group or political party.

adjective

  • 1Of a dark, intense green colour.

  • 2Originally and chiefly British. Deeply committed to environmental causes; designating, involving, or holding radical or extreme ‘green’ views.

Origin

Early 17th century; earliest use found in Philemon Holland (1552–1637), translator. From deep + green.

Pronunciation

deep green

/ˌdiːp ˈɡriːn/