[ dih-jes-ter, dahy- ]

  1. a person or thing that digests.

  2. Also di·ges·tor .Chemistry. an apparatus in which substances are softened or disintegrated by moisture, heat, chemical action, or the like.

Origin of digester

First recorded in 1570–80; digest + -er1

Words Nearby digester

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use digester in a sentence

  • The farm plans to utilize an anaerobic digester to gather waste such as left-over plant roots to generate power.

  • Ben, my fine fellow, put your hand into the cupboard, and bring out the patent digester.'

    The Pickwick Papers | Charles Dickens
  • The boiler or digester is filled with dusted rags, and the requisite amount of alkaline solution added.

    The Manufacture of Paper | Robert Walter Sindall
  • For this purpose a spherical digester is used, generally 7-9 feet diameter, and capable of holding 2-2 tons of rag.

    The Manufacture of Paper | Robert Walter Sindall
  • By this means the straw is softened and reduced in bulk, so that a larger quantity can be added before the digester is quite full.

    The Manufacture of Paper | Robert Walter Sindall
  • There should also be a small tube or hole covered with a weighted valve to prevent the danger of bursting the digester.

    Zoonomia, Vol. II | Erasmus Darwin

British Dictionary definitions for digester


/ (dɪˈdʒɛstə, daɪ-) /

  1. chem an apparatus or vessel, such as an autoclave, in which digestion is carried out

  2. a less common word for digestant

  1. a person or thing that digests

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