fusion
/ˈfjuː.ʒən/noun, verb
fusion is spelled F-U-S-I-O-N: 6 letters and 2 syllables. It appears 10 times per million words in written English, the 6,884th most frequent word form (wordfreq, 2021 data). As a noun, fusion means “The act of merging separate things, or the result thereof” (English Wiktionary, September 2026). The plural of fusion is fusions.
How many letters and syllables are in fusion?
| Letters | 6: F-U-S-I-O-N |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | 10 times per million words; the 6,884th most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is fusion?
Fusion appears 10 times per million words in written English, the 6,884th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce fusion?
- UK /ˈfjuː.ʒən/
Fusion has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Back_ache-Fusion.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with fusion?
One word on PlainSpell end in the same sounds as fusion from its last stressed vowel (/uʒən/, British pronunciation):
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of fusion
- fusions plural, present, singular, he/she/it
- fusioning participle, present
- fusioned participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does fusion mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The act of merging separate things, or the result thereof.
- 2
A nuclear reaction in which nuclei combine to form more massive nuclei with the concomitant release of energy.
- 3
A style of music that blends disparate genres; especially different types of jazz and reggae.
- 4
A style of cooking that combines ingredients and techniques from different countries or cultures
- 5
The act of melting or liquefying something by heating it.
- 6
The result of the hybridation of two genes which originally coded for separate proteins.
- 7
The process by which two distinct lipid bilayers merge their hydrophobic core, resulting in one interconnected structure.
- 8
The act of two characters merging into one, typically more powerful, being; or the merged being itself.
verb
- 1
nonstandardTo combine; to fuse.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Fusion in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | fusion |
| German | Schmelzen , Verschmelzen |
| Portuguese | fusão, fundição |
| Spanish | fundición , fusión |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does fusion come from?
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 (“to pour; to melt”) (see also found). Doublet of foison.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).