[ ih-pok-see, ih-pok- ]
See synonyms for epoxy on Thesaurus.com
  1. having the structure of an epoxide.

noun,plural ep·ox·ies.
  1. Also called epoxy resin. any of a class of resins derived by polymerization from epoxides: used chiefly in adhesives, coatings, electrical insulation, solder mix, and castings.

verb (used with object),ep·ox·ied, ep·ox·y·ing.
  1. to bond (two materials) by means of an epoxy resin.

Origin of epoxy

First recorded in 1915–20; ep- + oxy-2

Words Nearby epoxy

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

How to use epoxy in a sentence

  • It felt like it had been printed from some kind of ceramic/epoxy hybrid.

    Makers | Cory Doctorow
  • Made of epoxy resin glass-fiber material, treated to look like wood.

    Border, Breed Nor Birth | Dallas McCord Reynolds
  • epoxy missile resin—used for plastic tooling, metal bonding, adhesive, and casting and laminating applications.

    The Practical Values of Space Exploration | Committee on Science and Astronautics

British Dictionary definitions for epoxy


/ (ɪˈpɒksɪ) /

  1. of, consisting of, or containing an oxygen atom joined to two different groups that are themselves joined to other groups: epoxy group

  2. of, relating to, or consisting of an epoxy resin

nounplural epoxies
  1. short for epoxy resin

Origin of epoxy

C20: from epi- + oxy- ²

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

Scientific definitions for epoxy


[ ĭ-pŏk ]

  1. Any of various artificial resins made of chains of epoxide rings. Epoxies are tough, very adhesive, and resistant to chemicals. They are used to make protective coatings and glues. Also called epoxy resin

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for epoxy


[ (i-pok-see) ]

A high-strength adhesive, often made of two different materials that must be mixed together just prior to use.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.