terrain

noun

ter·​rain tə-ˈrān 

also te-

1

a(1)

: a geographic area

(2)

: a piece of land : ground

b

: the physical features of a tract of land

2

: terrane sense 1

3

a

: a field of knowledge or interest

b

: environment, milieu

Synonyms of terrain

• area
• realm
• element
• field
• domain
• walk
• department
• sphere
• kingdom

Examples of terrain in a Sentence

We had to drive over some rough terrain.

We hiked through a variety of terrains.

Recent Examples on the Web

Other routes point drivers toward Norðaravatn, a tranquil village lake that was recently transformed by the islands’ acclaimed ‘Closed for Maintenance’ environmental initiative, where global volunteers and locals hand-built a scenic walking path to protect the surrounding terrain. —Rebecca Ann Hughes, Forbes.com, 20 June 2026

The Cloudultra 2 is specifically designed for the trails and features On’s ‘missiongrip,’ which gives the shoe next-level traction across rugged terrain. —Jasmine Gomez, Travel + Leisure, 20 June 2026

The second is the question of the nuclear program and the removal of sanctions against Iran, which is the most technically demanding terrain. —Hamidreza Azizi, Time, 19 June 2026

The 4-foot-long prototype is a testbed designed to advance both robotic autonomy and extreme terrain mobility for future Moon and Mars missions. —Mrigakshi Dixit, Interesting Engineering, 19 June 2026

Word History

Etymology

French, land, ground, from Old French terrein, from Vulgar Latin *terranum, alteration of Latin terrenum, from neuter of terrenus of earth — more at terrene

First Known Use

1766, in the meaning defined at sense 1a(1)

Phrases Containing terrain

• all-terrain vehicle

Rhymes for terrain

• abstain
• airplane
• alkane
• arcane
• arraign
• attain
• backplane
• betaine
• biplane
• blockchain
• butane
• campaign

Kids Definition

terrain

noun

ter·​rain tə-ˈrān 

also te-

: the surface features of an area of land

rough terrain