Definition of wafer in English:


Syllabification: wa·fer
Pronunciation: /ˈwāfər


  • 1A very thin, light, crisp, sweet cookie or cracker, especially one of a kind eaten with ice cream.
    More example sentences
    • Remove the ice cream from the mould and serve with wafer biscuits or ice cream topping.
    • I do have a sweet tooth, particularly for Italian chocolate wafers and mini Cornettos.
    • Dessert is a few small sugar wafers in yet another cellophane package.
  • 1.1A thin disk of unleavened bread used in the Eucharist.
    More example sentences
    • Is it all right to chew the wafer or bread in communion or should I simply let it dissolve in my mouth as I was taught?
    • Church doctrine holds that Communion wafers, like the bread served at the Last Supper, must have at least some unleavened wheat.
    • Meantime, EBay has moved to stop the auction of a Eucharist wafer said to have been blessed by Pope John Paul II.
  • 1.2 Electronics A very thin slice of a semiconductor crystal used as the substrate for solid-state circuitry.
    More example sentences
    • Disclosed is a method for making reliable interconnect structures on a semiconductor wafer having a first dielectric layer.
    • Therefore, we can have thousands of devices on a single wafer.
    • The company's costs have risen dramatically thanks to its investment in 300 mm wafer fabs.
  • 1.3 historical A small disk of dried paste formerly used for fastening letters or holding papers together.
  • 1.4A round, thin piece of something: a wafer of ice
    More example sentences
    • Lia gently lifted up one of the half-collapsed shelves, careful not to get her hand caught between the two splintered wafers of wood.
    • DNA chips are elegantly simple in concept: thin wafers of glass or plastic embedded with strips of DNA.
    • The samples of solar wind particles, collected on ultra-pure wafers of gold, sapphire, silicon and diamond were designed to be returned for analysis by Earth-bound scientists.


[with object] rare Back to top  
  • Fasten or seal (a letter, document, etc.) with a wafer.
    More example sentences
    • The document was originally tied with narrow red and blue ribbons, which were attached to the signature page by a wafered impression of the seal of the United States.



More example sentences
  • I had one further mission, to investigate the famous Moroccan pastilla - a parcel of wafery pastry filled with an exotic concoction of meat, almonds, spices, sugar and eggs.
  • The bottom layer of the cake had a crispy, wafery crunch, and it was decorated with an X and O.
  • It's a thin layer of cheap chocolate wrapped around some sort of inexpensive wafery stuff with nutty, creamy stuff inside.


late Middle English: from an Anglo-Norman French variant of Old French gaufre (see goffer), from Middle Low German wāfel 'waffle'; compare with waffle2.

More definitions of wafer

Definition of wafer in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day skosh
Pronunciation: skəʊʃ
a small amount; a little