• synonyms


See more synonyms on Thesaurus.com
  1. an instrument for measuring the pressure of a fluid, consisting of a tube filled with a liquid, the level of the liquid being determined by the fluid pressure and the height of the liquid being indicated on a scale.

Origin of manometer

1700–10; < French manomètre, equivalent to mano- (< Greek manós loose, rare, sparse) + -mètre -meter
Related formsman·o·met·ric [man-uh-me-trik] /ˌmæn əˈmɛ trɪk/, man·o·met·ri·cal, adjectiveman·o·met·ri·cal·ly, adverbma·nom·e·try, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for manometer

Historical Examples

  • Still a few more degrees were needed on the manometer—just a few.

    Egholm and his God

    Johannes Buchholtz

  • They threw the manometer into the water to see if it would float.

    Egholm and his God

    Johannes Buchholtz

  • "Ask them how the manometer stands, Chalmers," ordered the Hon. Derek.

    A Sub and a Submarine

    Percy F. Westerman

  • The manometer now shows twenty-four meters, twenty-six meters.

  • I could now follow the ascent of the boat without consulting the manometer.

British Dictionary definitions for manometer


  1. an instrument for comparing pressures; typically a glass U-tube containing mercury, in which pressure is indicated by the difference in levels in the two arms of the tube
Derived Formsmanometric (ˌmænəʊˈmɛtrɪk) or manometrical, adjectivemanometrically, adverbmanometry, noun

Word Origin

C18: from French manomètre, from Greek manos sparse + 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 manometer


1730, from French manomètre (1706), said to have been coined by French mathematician Pierre Varignon (1654-1722) from Greek manos "thin, rare; loose in texture, porous; scanty, few" (see mono-) + -mètre (see -meter). Related: Manometric.

Online Etymology Dictionary, © 2010 Douglas Harper

manometer in Medicine


  1. An instrument that is used for measuring the pressure of liquids and gases.
  2. A sphygmomanometer.
Related formsman′o•metric (măn′ə-mĕtrĭk) null adj.ma•nome•try n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

manometer in Science


  1. An instrument used to measure the pressure exerted by liquids and gases. Pressure is exerted on one end of a U-shaped tube partially filled with liquid; the liquid is displaced upwards on the other side of the tube by a distance proportional to the pressure difference on each side of the tube.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.