Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One that makes a digest.
  • n. Chemistry A vessel in which substances are softened or decomposed, usually for further processing.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One who, or that which, digests.
  • n. A medicine or food that aids digestion, or strengthens digestive power.
  • n. A strong closed vessel in which bones or other substances may be subjected, usually in water or other liquid, to a temperature above that of boiling, in order to soften them.

from the GNU version of the Collaborative International Dictionary of English

  • n. One who digests.
  • n. A medicine or an article of food that aids digestion, or strengthens digestive power.
  • n. A strong closed vessel, in which bones or other substances may be subjected, usually in water or other liquid, to a temperature above that of boiling, in order to soften them.

from The Century Dictionary and Cyclopedia

  • n. One who or that which digestes.
  • n. One who digests food.
  • n. That which assists the digestion of food, as a medicine or an artiele of food that strengthens the digestive power of the alimentary canal.
  • n. A strong close vessel, in which bones or other substances may he subjected, in water or other liquid, to a temperature above that of boiling. It is made of iron or other metal, with an airtight lid, in which is a safety-valve. In this vessel animal or other substances are placed, and submitted to a higher degree of heat that could be obtained in open vessels, by which means the solvent power of the liquid is greatly increased. It is called in this form (first described in 1681)Papin's digester, from its inventor, Denis Papin, a Frenchman. The principle is applied in other forms, and by it various useful products are obtained on a large scale from animal carcases unfit for other use. In other kinds of digesters the operation is chemical, and does not imply the extreme pressures employed in that above described. Thus, in one kind, nut-galls or other vegetable products are placed in a vessel and saturated with ether; the volatile extract falls in minute drops into a closed vessel below, which is connected by means of a pipe with the top of the upper vessel to prevent the escape of the ether. See rendering-tank. Also digestor.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. autoclave consisting of a vessel in which plant or animal materials are digested

Etymologies

to digest + -er (Wiktionary)

Examples

  • The manure digester is sound science and makes good sense.

    Sound Politics: King County Bullshit Alert

  • It doesn't matter how long it takes: Kaman is determined to make this so-called digester work.

    Nancy Ruhling: Astoria Characters: The Wheelchair Gardener

  • Logan turned to the idea of a manure digester, which is something cattle ranchers have been using to turn cow manure into energy.

    Chicken Poop: An Eco-Friendly, Money-Saving Source Of Power

  • The farmer harvests the cow poop, separates it, and sends it into a digester, which is basically a two-acre lagoon.

    CNN Transcript Jul 18, 2008

  • The farmer harvests the cow poop, separates it and sends it into a digester, which is basically a two-acre lagoon.

    CNN Transcript Jul 18, 2008

  • The centre point at the bottom of the digester is the heart of the construction.

    6. Construction of the biogas plant

  • Make sure that all gas pipes going to gas storage tanks, engines, stoves, etc., are connected but that only the gate valve going into the gas tank is open and that the water level in the digester inlet and in the digester are the same.

    Chapter 8

  • The pH of a digester should be a little on the base side of neutral; some say pH 7.0 to 7.2 and others say 7.0 to 7.8.

    Chapter 7

  • Failure to do so could result in dangerous, uncontrolled release of biogas and if the digester is a plastic bag, it could float up and away.

    Chapter 13

  • The digester is a cube-shaped or cylindrical waterproof container with an inlet into which the fermentable mixture is introduced in the form of a liquid slurry.

    Chapter 15

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  • "The mill expanded between 1911 and 1913. New paper machines and boilers arrived from England. New grinders were installed. A new generator, turbine, and sulfite digester raised the mill's capacity from fifty to sixty-eight tons of newsprint a day. A debenture issue was floated in London. Annual sports days were organized in Grand Falls."
    —David Macfarlane, The Danger Tree, 137

    May 6, 2008