English Reference

Word

fusion

Phoneticsfu·sion, stress on the first syllable

US/ˈfjuʒən/

UK/fjˈuːʒən/

Definitions

01merging things

B2 · Upper Intermediate Uncountable noun

n. the act of joining two or more things together to make one new thing.

n. the process of merging separate elements, ideas, or entities into a single, unified whole.

“The new company is a fusion of two smaller tech firms.”

“The architect's latest project represents a perfect fusion of traditional materials and modern, minimalist design principles.”

Synonyms

02nuclear physics

C1 · Advanced Uncountable noun Science Technical

n. a process where small atoms join together to create energy.

n. a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.

“Scientists are working hard to make energy from fusion a reality.”

“Unlike nuclear fission, which splits atoms, fusion involves forcing nuclei together under immense pressure and temperature to generate power.”

Synonyms

nuclear fusion

Antonyms

03cooking style

B2 · Upper Intermediate Uncountable noun Cooking

n. a style of cooking that mixes ingredients and techniques from different countries.

n. a culinary style that intentionally combines elements, ingredients, or techniques from different regional or ethnic traditions.

“This restaurant is famous for its Japanese-Mexican fusion dishes.”

“The chef pioneered a unique style of fusion, blending classical French techniques with the bold, spicy flavours of Southeast Asian street food.”

Synonyms

04music style

B2 · Upper Intermediate Uncountable noun Music

n. a type of music that mixes different styles, like jazz and rock.

n. a musical genre that blends different styles, most commonly referring to jazz-rock fusion.

“The band plays a cool fusion of jazz and electronic music.”

“During the 1970s, many artists experimented with fusion, incorporating electric instruments and rock rhythms into complex jazz improvisations.”

Synonyms

Real-World Examples

“The “joke” in question is that record’s cartoonish send-up of frat-bro culture, set to fusions of hard rock riffs and hip-hop beats.”
The Guardian 21 Aug 2026
“And of course, photography has always been about a fusion of ideas and reality.”
The Guardian 25 Aug 2026

Etymology

First appears c. 1555, in a translation by Richard Eden. From Middle French fusion, from Latin fūsiōnem (the accusative of fūsiō), from fusus, past participle of fundō (“I pour, I melt”) (see also found). Doublet of foison.

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

Word family

NOUN

fusion(B2)

Domains

MusicPhysics

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Common
Level
B2 · Upper Intermediate
Updated

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English Reference