motocross

Dictionary: mo·to·cross (mō'tō-krôs', -krŏs') pronunciation

n. (Abbr. MX)
A cross-country motorcycle race over a closed course of rough terrain with steep hills and sharp curves. Also called scramble.

[French moto-cross : moto, motorcycle (short for motocyclette , from moto-, motor , from moteur , from Latin mōtor, mover; see motor) + EnglishCROSS(-COUNTRY) .]

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Britannica Concise Encyclopedia: motocross

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Motocross racing (credit: Kinney Jones)

Form of motorcycle racing in which cyclists compete on a closed course marked out over natural or simulated rough terrain. Courses vary widely but must be 1.5 – 5 km (1 – 3 mi) in length, with steep inclines, hairpin turns, and mud. Motorcycles are grouped into classes according to engine displacement (e.g., 125-, 250-, 500-cc). It is probably the most physically demanding motorcycle sport.

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	BMX (abbreviation)
	MX (abbreviation)
	British Motocross Champ '87 (1987 Sports & Recreation Film)

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		Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more
		Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved. Read more