terrain

American  

[tuh-reyn] / təˈreɪn /

noun

1. a tract of land, especially as considered with reference to its natural features, military advantages, etc.

2. Geology. terrane.

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terrain British  

/ təˈreɪn, ˈtɛreɪn /

noun

1. ground or a piece of ground, esp with reference to its physical character or military potential

   radio reception can be difficult in mountainous terrain

   a rocky terrain

2. a variant spelling of terrane

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Etymology

Origin of terrain

1720–30; < French ≪ Vulgar Latin *terrānum, noun use of neuter of *terrānus of land. See terra, -an

Explanation

An ATV, or all-terrain vehicle, is useful for people who drive on lots of different terrain, hence the name. Terrain is a noun used to talk about the ground, when you're specifically interested in how it appears or is shaped. In times of war, you'll often hear the term "hostile terrain" used to describe a region with lots of mountains, vast stretches of desert, or impenetrable jungles. These are all areas of difficult terrain that are hard to pass. Much of humankind's history can be traced by its effort to alter the terrain. We've made mountains into meadows, rivers into lakes, and prairies into roads, all to make the terrain more livable for us. You could even go so far as to say that a person's psyche is mysterious terrain.

Example Sentences

A Hypershell spokesman said that a snug, proper fit and a lower level of assistance can help on unstable terrain.

From The Wall Street Journal • May 21, 2026

Nearly a dozen fires have, together, consumed more than 26,000 acres of varied terrain in the region over the last week, in remote island chaparral as well as brushy foothills bordering neighborhoods.

From Los Angeles Times • May 20, 2026

The constitutional question raised by Chatrie is not simply whether one warrant went too far, but whether the government may use mass reservoirs of innocent people’s data as searchable terrain for criminal investigation.

From Slate • May 20, 2026

This type of terrain can allow seawater to move beneath the glacier during high tide, temporarily lifting sections of ice off the ground.

From Science Daily • May 19, 2026

In the blink of an eye, the momma bear and her cub were gone over the hill, blending in again with the snowy terrain.

From "Two Degrees" by Alan Gratz

Related Words

• area
• contour
• field
• ground
• land
• province
• region
• soil
• territory
• topography
• turf