1. A small, thin, crisp cake, biscuit, or candy.
2. Ecclesiastical A small thin disk of unleavened bread used in the Eucharist.
3. Pharmacology A flat, tablet of rice paper or dried flour paste encasing a powdered drug.
4. A small disk of adhesive material used as a seal for papers.
5. Electronics A small, thin circular slice of a semiconducting material, such as pure silicon, on which an integrated circuit can be formed.
tr.v. wa·fered, wa·fer·ing, wa·fers
1. To seal or fasten together with a disk of adhesive material.
2. Pharmacology To prepare in the form of wafers.
3. Electronics To divide into wafers.
[Middle English wafre, from Anglo-Norman, variant of Old North French waufre, of Germanic origin; see webh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.