Skip to main content
Select Source:

damp

damp, in mining, any mixture of gases in an underground mine, especially oxygen-deficient or noxious gases. The term damp probably is derived from the German dampf, meaning fog or vapor. Several distinct types of damp are recognized. Firedamp is methane and other flammable gases, often mixed with air; it results from the decomposition of coal or other carbonaceous materials. Explosive mixtures of firedamp with air usually contain from 1% to 14% methane. The mixture of gases that remains after a firedamp explosion is called afterdamp; it consists chiefly of carbon dioxide and nitrogen. Chokedamp is any mixture of oxygen-deficient mine gases that causes suffocation. (In England, carbon dioxide is called chokedamp.) Several methods are used for detection of damps. The Davy safety lamp is one of the earliest detection devices. The color and height of the lamp flame indicate the amount of firedamp present; if the flame is extinguished, chokedamp is present. Canaries were formerly kept in mines; the birds are overcome by relatively small quantities of noxious gases, and their death warned the miners of the presence of damps. Special colorimetric detectors are now used. The methanometer is a special portable instrument used to detect firedamp.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damp." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damp." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/damp

"damp." The Columbia Encyclopedia, 6th ed.. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/damp

damp

damp / damp/ • adj. slightly wet: hair still damp from the shower. • n. 1. moisture diffused through the air or a solid substance or condensed on a surface, typically with detrimental or unpleasant effects. ∎  foul, stifling, or poisonous gas, esp. in a mine. ∎  (damps) archaic damp air or atmosphere. 2. archaic a check or discouragement. • v. [tr.] 1. make (something) slightly wet: damp a small area with water. 2. control or restrain (a feeling or a state of affairs): she tried to damp down her feelings of despair. ∎  make (a fire) burn less strongly by reducing the flow of air to it. 3. restrict the amplitude of vibrations on (a piano or other musical instrument) so as to reduce sound. ∎  Physics progressively reduce the amplitude of (an oscillation or vibration): concrete structures damp out any vibrations. ∎  reduce the level of (a noise or sound). DERIVATIVES: damp·ish adj. damp·ly adv. damp·ness n.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damp." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damp." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp-1

"damp." The Oxford Pocket Dictionary of Current English. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp-1

damp

damp vapour, (noxious) gas XIV; fog, mist; humidity; depression, discouragement, †stupor XVI. — (M)LG. damp vapour, steam, smoke = (O)HG. dampf steam; rel. to OHG. dempfen (G. dämpfen) = OS. bithempian; f. Gmc. *þamp- (rel. to *pump-, (O)HG. duft).
Hence damp adj. †dazed XVI; †noxious; slightly wet XVIII. damp vb. XIV. dampen XVII; see -EN 2.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damp." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damp." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp-2

"damp." The Concise Oxford Dictionary of English Etymology. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp-2

damping

damping A slowing down or prevention of oscillation due to the dissipation of the kinetic energy of oscillation. Friction will dampen a mechanical system, and electromagnetic damping uses eddy currents to oppose motion. See also CRITICAL DAMPING.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damping." A Dictionary of Earth Sciences. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damping." A Dictionary of Earth Sciences. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/damping

"damping." A Dictionary of Earth Sciences. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/damping

damp

damp damp something down control or restrain a feeling or a situation (originally, in literal use, make a fire burn less strongly by reducing the flow of air to it).
damp squib a situation or event which is much less impressive than expected.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damp." The Oxford Dictionary of Phrase and Fable. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damp." The Oxford Dictionary of Phrase and Fable. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp

"damp." The Oxford Dictionary of Phrase and Fable. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp

damp

damp. To check the vibrations of an instr. (e.g. kettledrum) by touching it in some way. See also piano.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damp." The Concise Oxford Dictionary of Music. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damp." The Concise Oxford Dictionary of Music. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/arts/dictionaries-thesauruses-pictures-and-press-releases/damp

"damp." The Concise Oxford Dictionary of Music. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/arts/dictionaries-thesauruses-pictures-and-press-releases/damp

damp

dampamp, camp, champ, clamp, cramp, damp, encamp, gamp, lamp, ramp, samp, scamp, stamp, tamp, tramp, vamp •firedamp • headlamp • wheel clamp •sidelamp • spotlamp • blowlamp •sunlamp •hemp, kemp, temp •blimp, chimp, crimp, gimp, imp, limp, pimp, primp, scrimp, shrimp, simp, skimp, wimp •chomp, clomp, comp, pomp, romp, stomp, swamp, tromp, whomp, yomp •bump, chump, clump, crump, dump, flump, frump, gazump, grump, hump, jump, lump, outjump, plump, pump, rump, scrump, slump, stump, sump, thump, trump, tump, ump, whump •ski-jump • showjump • handpump •mugwump

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"damp." Oxford Dictionary of Rhymes. . Encyclopedia.com. 11 Dec. 2017 <http://www.encyclopedia.com>.

"damp." Oxford Dictionary of Rhymes. . Encyclopedia.com. (December 11, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp-0

"damp." Oxford Dictionary of Rhymes. . Retrieved December 11, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/damp-0