Dictionary.com
Thesaurus.com

motocross

American  
[moh-toh-kraws, -kros] / ˈmoʊ toʊˌkrɔs, -ˌkrɒs /

noun

motocrosses plural
  1. a timed motorcycle race over a closed course consisting of a winding dirt trail with hills, jumps, sharp turns, and often muddy terrain. MX


motocross British  
/ ˈməʊtəˌkrɒs /

noun

  1. a motorcycle race across very rough ground

  2. another name for rallycross See also autocross

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of motocross

First recorded in 1945–50; from French: equivalent to moto(rcycle) + cross(-country)

Explanation

Motocross, or MX, is a high-intensity, physically demanding form of off-road motorcycle racing held on enclosed dirt circuits. The sport of motocross involves riders competing side-by-side, racing over dirt mounds and banked corners. The term motocross originated in the 1940s as a portmanteau of the French moto (short for motocyclette, meaning "motorcycle") and the English cross-country. The sport evolved from an English version called scrambling, and became popular in the U.S. in the 1960s. Modern motocross, or "dirt bike" racing, features mass starts of up to 40 riders charging toward the first turn of the track to gain an advantage in the race. MX is a high-intensity, physically demanding sport.

Keep Reading on Vocabulary.com

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

There are also synchronized motocross jumps in front of the White House, which feels like a 12-year-old’s doodle come to life.

From Slate Jun. 16, 2026

The Paris public prosecutor's office announced the death of a young man in his twenties after he crashed head-on into concrete blocks on a Paris ring road exit ramp on his motocross bike.

From Barron's May 31, 2026

Few were better at it than Mr. Lagerfeld, who with his powdered ponytail, dark glasses and fingerless motocross gloves was a cartoon unto himself, but he was far from the only one.

From New York Times Jun. 19, 2024

Pink, who’s married to former motocross racer Carey Hart — with whom she has a 12-year-old daughter, Willow, and a 6-year-old son, Jameson — will stop at Inglewood’s SoFi Stadium on Thursday night.

From Los Angeles Times Oct. 4, 2023

“In motocross racing, it’s against the rules to get off your bike. I think he cheated.”

From "Ralph S. Mouse" by Beverly Cleary

The matchup between the Big Os was almost enough to block out all the dancing girls, jumping boys, fireworks, laser lights, eardrum-pounding music and halftime motocrosses that are part of the show in Orlando.

From Time Magazine Archive

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training