marine

muh-REEN /məˈriːn/
adjectivenounB1IELTSTOEFL
neutral

Relating to, found in, or produced by the sea or ocean.

Broad descriptor applied to sea life, oceanic habitats, shipping, and naval forces.

The story behind the word. Rooted directly in the Latin word 'mare', meaning sea. The Romans used it for all salt waters. It gave English 'mariner' (sailor), 'maritime', and 'marine', cementing its position as the primary descriptor of all things oceanic.

Word relationships

  • oceanic: 'Oceanic' specifically emphasizes open or deep ocean regions, while 'marine' covers all sea-related environments.
  • terrestrial: 'Terrestrial' refers to land-based life or environments, direct opposite to marine.

Commonly confused with

  • aquatic: 'Aquatic' applies to both freshwater and saltwater environments; 'marine' applies strictly to saltwater seas.

Word family

  • mariner (noun): A sailor or navigator.
  • submarine (noun): A vessel designed to operate underwater.

Collocations

  • marine life
  • marine biology
  • marine ecosystem
  • marine environment

Example sentences

  • "Marine biologists work to protect delicate shallow reef systems from coastal pollution." Conservation
  • "The nation established a formidable marine fleet to secure its international trade passages." Maritime History

Memory hook

MARINE = MAR (Latin for sea). Think of a submarine sailing in the sea. Of the ocean blue.

When not to use

Do not apply to strictly freshwater environments like inland lakes, ponds, or mountain streams.

Fun facts

  • The largest ocean structure on Earth built by living creatures is the Great Barrier Reef, visible even from outer space.

Related words

aquatic, pelagic, reef

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