epoxy

1 of 3

noun

ep·​oxy i-ˈpäk-sē 

plural epoxies

: epoxy resin

Incorporating such ingredients as carbon and aramid fibers, graphite, epoxies and ceramics, these corrosion-resistant composites could replace steel cables and concrete decks, cutting weight by as much as two-thirds.

—J. Taylor Buckley

epoxy

2 of 3

verb

epoxied or epoxyed; epoxying

transitive verb

: to glue, fill, or coat with epoxy resin

epoxy

3 of 3

adjective

1

: containing oxygen attached to two different atoms already united in some other way

specifically : containing a 3-membered ring consisting of one oxygen and two carbon atoms

2

: of or relating to an epoxide

Examples of epoxy in a Sentence

Recent Examples on the Web

Noun

In another part of the facility, the screams of industrial machinery made talking difficult, and the fumes from hot epoxy filled the air. — Simon Shuster, The Atlantic, 17 July 2026

At the seventh spot, both the dark blue coating and light blue epoxy primer underneath had peeled away, leaving the concrete exposed. — Maura Judkis, Washington Post, 16 July 2026

Verb

Once the season started, Finch went the other way, epoxying an eight-man, veteran-laden rotation into each game with almost no wiggle room. — Jon Krawczynski, The Athletic, 22 Feb. 2025

Our decision to epoxy the floors speaks volumes about our dedication to cleanliness and hygiene. — Hilary Tetenbaum, USA TODAY, 6 June 2024

Adjective

The food scraps and stalks are brought to the lab where they're dried, ground up and mixed with various natural binders and fillers leading to a compostable alternative to cement or epoxies. — Marcella Baietto, CBS News, 1 June 2026

The incident began on Thursday, May 21, when a 34,000-gallon storage tank containing methyl methacrylate, a flammable, toxic epoxy, overheated at a GKN Aerospace plant in Orange County, Calif. — Christopher Edwards, PEOPLE, 25 May 2026

Word History

Etymology

Adjective

epi- + oxy

First Known Use

Noun

1954, in the meaning defined above

Verb

1966, in the meaning defined above

Adjective

1916, in the meaning defined at sense 1

Phrases Containing epoxy

• epoxy resin

Rhymes for epoxy

• alkoxy
• deoxy
• ethoxy
• hydroxy
• methoxy
• peroxy
• phenoxy
• boxy
• foxy
• oxy
• proxy
• dihydroxy

Kids Definition

epoxy

1 of 2 noun

ep·​oxy i-ˈpäk-sē 

plural epoxies

: epoxy resin

epoxy

2 of 2 verb

epoxied or epoxyed; epoxying

: to glue, fill, or coat with epoxy resin

Medical Definition

epoxy

adjective

ep·​oxy i-ˈpäk-sē 

: containing oxygen attached to two different atoms already united in some other way

specifically : containing a 3-membered ring consisting of one oxygen and two carbon atoms