What does "fusion" mean?
The act of merging separate things, or the result thereof.
Fusion
noun, verb
noun, verb ·2 syllables ·Common ·High school level
Meaning at a glance
- Primary sense: The act of merging separate things, or the result thereof.
- Grammar: fusion is listed as noun, verb.
- Nearest alternatives: merger, addition, admixture, affiliation.
- Useful contrasts: distinct communities, articulations, bifurcation.
- Usage evidence: The physicist was aware of the potential danger of nuclear fusion.
How to use "fusion"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "fusion" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "fusion" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "fusion" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "fusion" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "fusion" is acting as noun, verb in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "merger" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "fusion", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Noun
- 1 The act of merging separate things, or the result thereof. countable, uncountable
"These tasks may be summarised as comprising the maintenance and improvement of railway services and facilities during a transitional period; the reorganising of systems of management and technical practices, so as to secure maximum efficiency and economy from the fusion of four major railway systems (using for these purposes all the resources and traditional skill of the former companies); and the building-up of a sense of common purpose and esprit de corps among a staff of more than 600,000 men and women."
- 2 the act of fusing (or melting) together wordnet
- 3 The act of merging separate things, or the result thereof.; A nuclear reaction in which nuclei combine to form more massive nuclei with the concomitant release of energy. countable, uncountable
- 4 correction of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization wordnet
- 5 The act of merging separate things, or the result thereof.; A style of music that blends disparate genres; especially different types of jazz and reggae. countable, uncountable
Show 10 more definitions
- 6 the combining of images from the two eyes to form a single visual percept wordnet
- 7 The act of merging separate things, or the result thereof.; A style of cooking that combines ingredients and techniques from different countries or cultures countable, uncountable
- 8 an occurrence that involves the production of a union wordnet
- 9 The act of merging separate things, or the result thereof.; The act of melting or liquefying something by heating it. countable, uncountable
"This Cryſtal is a pellucid fiſſile Stone, clear as Water or Cryſtal of the Rock, and without Colour; enduring a red Heat without loſing its tranſparency, and in a very ſtrong Heat calcining without Fuſion."
- 10 a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy wordnet
- 11 The act of merging separate things, or the result thereof.; The result of the hybridation of two genes which originally coded for separate proteins. countable, uncountable
- 12 the merging of adjacent sounds or syllables or words wordnet
- 13 The act of merging separate things, or the result thereof.; The process by which two distinct lipid bilayers merge their hydrophobic core, resulting in one interconnected structure. countable, uncountable
- 14 the state of being combined into one body wordnet
- 15 The act of merging separate things, or the result thereof.; The act of two characters merging into one, typically more powerful, being; or the merged being itself. countable, uncountable
Verb
- 1 To combine; to fuse. nonstandard, transitive
Antonyms
Example
"The physicist was aware of the potential danger of nuclear fusion."
Common questions
What is a synonym for "fusion"?
Common synonyms include: merger, addition, admixture, affiliation, agglomeration, aggregation.
How do you use "fusion" in a sentence?
The physicist was aware of the potential danger of nuclear fusion.
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.