water in the form of an invisible gas or vapor.
water changed to this form by boiling, extensively used for the generation of mechanical power, for heating purposes, etc.
the mist formed when the gas or vapor from boiling water condenses in the air.
an exhalation of a vapor or mist.
Informal. power or energy.
verb (used without object)
to emit or give off steam or vapor.
to rise or pass off in the form of steam or vapor.
to become covered with condensed steam, as a window or other surface (often followed by up ).
to generate or produce steam, as in a boiler.
to move or travel by the agency of steam.
to move rapidly or evenly: He steamed out of the room.
Informal. to be angry or show anger: Fans are still steaming from Monday night’s sloppy 5-4 loss.
verb (used with object)
to expose to or treat with steam, as in order to heat, cook, soften, renovate, or the like.
to emit or exhale (steam or vapor).
Informal. to cause to become irked or angry (often followed by up ).
to convey by the agency of steam: to steam the ship safely into port.
heated by or heating with steam: a steam radiator.
propelled by or propelling with a steam engine.
operated by steam.
conducting steam: a steam line.
bathed with or affected by steam.
of or relating to steam.
blow / let off steam, Informal. to give vent to one's repressed emotions, especially by talking or behaving in an unrestrained manner: Don't take her remarks too seriously—she was just blowing off steam.

before 1000; Middle English steme, Old English stēam; cognate with Dutch stoom

steamless, adjective
outsteam, verb (used with object)
presteam, adjective, verb (used with object)
unsteamed, adjective
unsteaming, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To un-steaming
World English Dictionary
steam (stiːm)
1.  the gas or vapour into which water is changed when boiled
2.  the mist formed when such gas or vapour condenses in the atmosphere
3.  any vaporous exhalation
4.  informal power, energy, or speed
5.  get up steam
 a.  (of a ship, etc) to work up a sufficient head of steam in a boiler to drive an engine
 b.  informal to go quickly
6.  informal let off steam to release pent-up energy or emotions
7.  under one's own steam without the assistance of others
8.  slang (Austral) cheap wine
9.  (modifier) driven, operated, heated, powered, etc, by steam: a steam radiator
10.  (modifier) treated by steam: steam ironed; steam cleaning
11.  jocular (modifier) old-fashioned; outmoded: steam radio
12.  to emit or be emitted as steam
13.  (intr) to generate steam, as a boiler, etc
14.  (intr) to move or travel by steam power, as a ship, etc
15.  informal (intr) to proceed quickly and sometimes forcefully
16.  to cook or be cooked in steam
17.  (tr) to treat with steam or apply steam to, as in cleaning, pressing clothes, etc
[Old English; related to Dutch stoom steam, perhaps to Old High German stioban to raise dust, Gothic stubjus dust]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

O.E. steam "vapor, fume," from P.Gmc. *staumaz (cf. Du. stoom), of unknown origin. The verb is from O.E. stemen, stymen "to emit a scent or odor;" slang meaning "to make angry" is from 1922. Steamy is first attested 1644; in the sense of "erotic, sexy," it is first recorded 1952. Steamboat is from 1787;
steam-engine is from 1751; steamer is 1814 in the cookery sense, 1825 as "a vessel propelled by steam," hence steamer trunk (1885), one that carries the essentials for a voyage. Steam age first attested 1941. Steam heat as a method of temperature control recorded from 1904. Steam-roller is from 1866; as a verb, first recorded 1912.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
steam   (stēm)  Pronunciation Key 
  1. Water in its gaseous state, especially at a temperature above the boiling point of water (above 100°C, or 212°F, at sea level). See Note at vapor.

  2. A mist of condensed water vapor.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature