noun
Meaning 1
A twist or fold.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Standard Lemma guide
convolution
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
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Received-Pronunciation: /kɒn.vəˈluːʃ(ə)n/
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Southern-England: Recorded audio is listed in the source snapshot.
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General-American: /kɑn.vəˈluːʃ(ə)n/
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rhymes with -uːʃən
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CMU ARPABET: K AA1 N V AH0 L UW2 SH AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
noun
Meaning 2
Any of the folds on the surface of the brain.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 3
The shape of something rotating; a vortex.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 4
The state or condition of being convoluted.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 5
A mathematical operation on two functions that produces a third that expresses how the shape of one is modified by the other; the integral of the product of the two functions after one is reflected about the y-axis and shifted along the x-axis.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Qualifier: functional analysis
Topics: mathematics, sciences
Examples
- 1934, Aurel Wintner, The proper method in dealing with distribution functions and their convolutions (“Faltungen”) is the method of Fourier transforms, first applied systematically by Levy in his book on the calculus of probability.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 6
A function which maps a tuple of sequences into a sequence of tuples.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 7
One 360° turn in a spring or similar helix.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
noun
Meaning 8
the action of coiling or twisting or winding together
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: change of shape
noun
Meaning 9
a convex fold or elevation in the surface of the brain
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: gyrus
Antonyms: none provided
Broader terms: structure, anatomical structure, complex body part, bodily structure, body structure
Narrower terms: frontal gyrus, temporal gyrus, parietal gyrus, occipital gyrus, central gyrus
noun
Meaning 10
the shape of something rotating rapidly
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: whirl, swirl, vortex
Antonyms: none provided
Broader terms: round shape
History
Etymology
Etymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Proto-Indo-European *welH-der. Proto-Italic *wolwō Latin volvō Latin convolvō Latin convolūtusbor. English -tion English convolution Borrowed from Latin convolutus (“to roll together”), past participle of convolvere, from con- + volvere (“to roll”), with the suffix -tion. Equivalent to convolute + -ion. The mathematical sense is a semantic calque from Faltung.
Across languages
Translations
25 source translations are retained for this English entry.
- Bulgarian: извивка (izvivka) — twist or fold
- Bulgarian: витка (vitka) — twist or fold
- Finnish: poimu — twist or fold
- Finnish: laskos — twist or fold
- Bulgarian: гънка (gǎnka) — any of the folds on the surface of the brain
- Catalan: circumvolució — any of the folds on the surface of the brain
- Finnish: poimu — any of the folds on the surface of the brain
- French: circonvolution — any of the folds on the surface of the brain
- Bulgarian: витка (vitka) — shape of something rotating; a vortex — see also vortex
- Finnish: kierre — shape of something rotating; a vortex — see also vortex
- Bulgarian: обърканост (obǎrkanost) — state or condition of being convoluted
- Finnish: kiertyminen — state or condition of being convoluted
- Bulgarian: конволюция (konvoljucija) — mathematics: mathematical operation on two functions
- Chinese Mandarin: 卷積 /卷积 (juǎnjī) — mathematics: mathematical operation on two functions
- Chinese Mandarin: 褶積 /褶积 (zhějī) — mathematics: mathematical operation on two functions
- Czech: konvoluce — mathematics: mathematical operation on two functions
- Hungarian: konvolúció — mathematics: mathematical operation on two functions
- Icelandic: földun — mathematics: mathematical operation on two functions
- Italian: convoluzione — mathematics: mathematical operation on two functions
- Central Kurdish: لوول (lûl) — mathematics: mathematical operation on two functions
- Central Kurdish: پێچ (pêç) — mathematics: mathematical operation on two functions
- Polish: splot — mathematics: mathematical operation on two functions
- Spanish: convolución — mathematics: mathematical operation on two functions
- Bulgarian: конволюция (konvoljucija) — computing: function that maps a tuple of sequences into a sequence of tuples
- Finnish: kierros — one 360° turn in a spring or similar helix
Real reading context