a combining form meaning “measure,” used in the names of instruments measuring quantity, extent, degree, etc.: altimeter; barometer.
Compare -metry.

Origin of -meter

< New Latin -metrum < Greek métron measure
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British Dictionary definitions for -meter


n combining form

indicating an instrument for measuringbarometer
prosody indicating a verse having a specified number of feetpentameter

Word Origin for -meter

from Greek metron measure
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

Word Origin and History for -meter


word-forming element meaning "device or instrument for measuring; commonly -ometer, occasionally -imeter; from French -mètre, from Greek metron (see meter (n.3)).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for -meter



Measuring device:refractometer.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.