Dictionary.com

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of motor

1580–90; <Latin mōtor mover, equivalent to mō- (variant stem of movēre to move) + -tor-tor
mul·ti·mo·tor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for motor

motor
/ (ˈməʊtə) /

noun

adjective

producing or causing motion
physiol
  1. of or relating to nerves or neurons that carry impulses that cause muscles to contract
  2. of or relating to movement or to muscles that induce movement

verb

C16: from Latin mōtor a mover, from movēre to move
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

Medical definitions for motor

motor
[ mōtər ]

adj.

Causing or producing motion.
Of or being nerves that carry impulses from the nerve centers to the muscles.
Involving or relating to movements of the muscles.
Of or relating to an organism's overt reaction to a stimulus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for motor

motor
[ mōtər ]

Noun

A machine that uses energy, such as electric or chemical energy (as from burning a fuel), to produce mechanical motion. See also engine.

Adjective

Involving the muscles or the nerves that are connected to them. Compare sensory.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Get Online Help For Kids!