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wafer definition


This page has 9 definitions of wafer with English translations in 4 languages. Wafer is a noun and verb. Also define these 13 related words and terms: biscuit, cookie, Christianity, consecrate, unleavened, communion, seal, electronics, semiconductor, electronic, circuit, fasten, and wafer.

See also: Wafer

English wafer definition

Some Nilla wafers.
A rolled wafer.
Communion wafers (on the right).


From Anglo-Norman wafre, waufre (Old French gaufre), from a Germanic source. Compare Middle Low German wāfel, Middle Dutch wafel (honeycomb), West Flemish wafer. See also waffle.



wafer (plural wafers)

  1. A light, thin, flat biscuit/cookie.
    • Biscuit definition
      A small, flat, baked good which is either hard and crisp or else soft but firm; a cookie. (1 of 10 biscuit definitions)
    • Cookie definition
      A small, flat, baked good which is either crisp or soft but firm. (1 of 8 cookie definitions)
  2. (Christianity) A thin disk of consecrated unleavened bread used in communion.
  3. A soft disk originally made of flour, and later of gelatin or a similar substance, used to seal letters, attach papers etc.
    • 1749, Henry Fielding, Tom Jones, Folio Society 1973, p. 202:
      The house supplied him with a wafer for his present purpose, with which, having sealed his letter, he returned hastily towards the brook side, in order to search for the things which he had there lost.
  4. (electronics) A thin disk of silicon or other semiconductor on which an electronic circuit is produced.
    • Electronics definition
      The study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles or by converting the flow of charged particles to or from other forms of energy. (1 of 3 electronics definitions)


Derived terms



wafer (third-person singular simple present wafers, present participle wafering, simple past and past participle wafered)

  1. (transitive) To seal or fasten with a wafer.
    • 1775, Frances Burney, Journals & Letters, Penguin 2001, 4 March:
      [M]y Father, who knew he was well, wafered the paragraph upon a sheet of paper, and sent to his Lodgings.
    • 1913, Joseph Conrad, Chance, New York: Doubleday, Doran & Company, p. 81:
      [T]he beginning of de Barral's end became manifest to the public in the shape of a half-sheet of note-paper wafered by the four corners on the closed door […].

French wafer definition


Borrowed from English wafer.


wafer m (plural wafers)

  1. wafer (electronic component)

Italian wafer definition


Borrowed from English wafer.


wafer m (invariable)

  1. wafer (biscuit and electronic component)

Portuguese wafer definition


Borrowed from English wafer.


wafer m (plural wafers)

  1. wafer (type of biscuit)
  2. (electronics) wafer (disk on which an electronic circuit is produced)