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trench

trench

14 6.8
A very deep part of the ocean floor with steep sides where one plate moves under another
  • noun
  • /trɛnʧ/
  • Specialized
translation icon : fosa oceánica
  • The ocean's deepest reach, the Marianas Trench, plummets seven miles towards the Earth's core.
  • Mariana Trench

Put them on a boat, send them out somewhere over the Marianas Trench.

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Examples

  • We need to see deep trenches, the undersea mountains, and understand life in the deep sea.

  • We can take the pressure of the Mariana Trench.

  • We're safe and sound at the bottom of this trench.

  • This was taken in the deepest trench on Earth.

  • The longest, deepest trench in the Atlantic Ocean.

  • It's at the edge, but it's also right at the top of one of the deepest ocean trenches in the world.

  • This is a model to show what happens in a trench, where in this case, the sea floor is going to be sliding underneath the land.

  • Couper was also a noted oceanographer and made one of the deepest dives to the Mariana Trench in the Pacific Ocean.

    Academic text (2010)
  • And the lowest point in Antarctica is within the Bentley Subglacial Trench, which reaches 2,555 meters below sea level.

    Blog text (9)
  • The ocean floor features a massive trench that is home to unique marine life.

Synonyms

deep
vstrench
6 7.4

A very low, steep part of the ocean floor

is specifically a long steep depression formed by one plate subducting beneath another
oceanic abyss
vstrench
  • Specialized
8.8

A very deep, steep place on the ocean floor where Earth's plates meet

is formed specifically by one tectonic plate subducting beneath another

Antonyms

1.0

A very high area of land with steep sides and a top

Compounds

22 3.1

A long waterproof coat with a belt and deep pockets, often worn in a military style

trench warfare
  • Specialized
2 6.5

A way of fighting where soldiers attack, defend, and live in long trenches facing each other

trench foot
  • Specialized
1 8.4

A foot problem from long cold, wet exposure that causes pain, swelling, and numbness

trench mouth
  • Specialized
1 9.3

A very painful gum infection that causes mouth sores, bleeding and bad breath

A long slow struggle where neither side can win or make much progress

trench knife
  • Archaic
1 9.0

A knife with two sharp edges made for close fighting in trenches

A deep part of the Pacific Ocean floor between New Guinea and the Solomon Islands

8.2

A narrow trench that lets soldiers move safely from the back to the front lines

approach trench
  • Specialized
8.9

A narrow trench that lets soldiers move from rear to front safely

A long, very deep valley in the Pacific Ocean floor off the coast of Chile

fire trench
  • Specialized
8.9

A long narrow trench that soldiers use to shelter while shooting at the enemy

A very deep part of the Pacific Ocean northeast of Japan about 9,000 meters deep

A very deep part of the Atlantic Ocean north of Puerto Rico and Haiti

A very deep valley on the Pacific Ocean floor near Peru and Chile

trench fever
  • Specialized
8.1

A disease causing fever, headaches, and muscle pain spread by lice

trench mortar
  • Archaic
8.7

A short gun that fires shells high into the air over short distances in trench fighting

slit trench
  • Specialized
8.6

A narrow ditch in the ground soldiers use for shelter from enemy fire

How Deep

ocean bottom
3 3.7
trench
  • Specialized
14 6.8
basin
72 3.1

Surface Forms

trench singular
trenches plural

Etymology

The noun trench comes from the French trancher 'to cut', and the deep, narrow parts of the sea floor look like giant 'cuts' in the earth. That's why we call places like the Mariana trench a very deep 'cut' in the ocean floor.