English Reference

Word

epoxy

US/ɪˈpɑksi/

UK/ɪpˈɒksi/

Definitions

01strong adhesive or resin

C1 · Advanced Uncountable noun Science Technical

n. a powerful glue or coating made by mixing two liquids together until they turn into a hard, durable plastic.

n. a thermosetting polyepoxide resin used chiefly in high-performance adhesives, industrial coatings, and composite materials.

“He used a two-part epoxy to fix the broken handle on the ceramic mug.”

“The contractor applied a thick layer of industrial epoxy to the warehouse floor to ensure it could withstand heavy machinery and chemical spills.”

Usage

Often used as an uncountable noun for the substance or a countable noun for a specific product type.

Synonyms

resinadhesivesealant

02to glue with resin

C2 · Proficiency Technical

v. to stick things together using epoxy glue.

v. to bond, seal, or coat a surface using an epoxy resin.

“The carpenter decided to epoxy the joints for extra strength.”

“After the structural repairs were complete, the engineers epoxied the carbon fibre sheets to the bridge supports to prevent further corrosion.”

Usage

A transitive verb that takes a direct object representing the item being bonded or coated.

Synonyms

03made of or containing epoxy

C1 · Advanced Science Technical

adj. describes something made from or containing this strong plastic resin.

adj. pertaining to or derived from an epoxide; used to describe materials or components containing epoxy resin.

“The boat has an epoxy coating to protect the wood from salt water.”

“The laboratory was fitted with epoxy countertops because they are resistant to heat and most corrosive chemicals.”

Real-World Examples

“Bisphenols are also ingredients in epoxy resins, which are used to coat the inside of bottle caps and metal food and drink containers.”
The Conversation 28 Sept 2026
“Before the fossils could be imaged, McKellar's team at the Royal Saskatchewan Museum embedded the amber in epoxy and polished it with rotary tools to expose the insects inside.”
Phys.org 3 Sept 2026

Etymology

From ep- + -oxy.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domain

Chemistry

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Occasional
Level
C1 · Advanced
Updated

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English Reference