See more synonyms for wafer on Thesaurus.com
  1. a thin, crisp cake or biscuit, often sweetened and flavored.
  2. a thin disk of unleavened bread, used in the Eucharist, as in the Roman Catholic Church.
  3. a thin disk of dried paste, gelatin, adhesive paper, or the like, used for sealing letters, attaching papers, etc.
  4. Medicine/Medical. a thin sheet of dry paste or the like, used to enclose a powder to be swallowed.
  5. any small, thin disk, as a washer or piece of insulation.
  6. Electronics. a thin slice of semiconductor used as a base material on which single transistors or integrated-circuit components are formed.
verb (used with object)
  1. to seal, close, or attach by means of a wafer or wafers: to wafer a letter.

Origin of wafer

1350–1400; Middle English wafre < Middle Dutch wafer, variant of wafel waffle1
Related formswa·fer·like, wa·fer·y, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for wafer

cake, cookie, cracker, candy, biscuit

Examples from the Web for wafer

Contemporary Examples of wafer

Historical Examples of wafer

  • I go in with him, and as we are coming out, I ask him child-like for a wafer.

    The Book of Khalid

    Ameen Rihani

  • Neither were to be had, and he was fain to put up with a wafer.

    One Of Them

    Charles James Lever

  • It was about as large around as a wafer, but somewhat thicker.

  • They give him a slice of bread a little larger than a dollar and as thin as a wafer.

    Holland, v. 1 (of 2)

    Edmondo de Amicis

  • The frog was caught and killed, the wafer got back, and the girl recovered.

    Europa's Fairy Book

    Joseph Jacobs

British Dictionary definitions for wafer


  1. a thin crisp sweetened biscuit with different flavourings, served with ice cream, etc
  2. Christianity a thin disc of unleavened bread used in the Eucharist as celebrated by the Western Church
  3. pharmacol an envelope of rice paper enclosing a medicament
  4. electronics a large single crystal of semiconductor material, such as silicon, on which numerous integrated circuits are manufactured and then separated
  5. a small thin disc of adhesive material used to seal letters, documents, etc
  1. (tr) to seal, fasten, or attach with a wafer
Derived Formswafer-like or wafery, adjective

Word Origin for wafer

C14: from Old Northern French waufre, from Middle Low German wāfel; related to waffle 1
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 wafer

late 14c., from Anglo-French wafre, Old North French waufre "honeycomb, wafer," perhaps from Frankish (cf. Flemish wafer, altered from Middle Dutch wafel "honeycomb;" see waffle (n.)). Also found in Old French as gaufre, gofre "wafer, waffle." Eucharistic bread first so called 1550s.

Online Etymology Dictionary, © 2010 Douglas Harper