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convolution

Pronunciation: /kɒn.vəˈluːʃ(ə)n/

The English word “convolution” has 7 meanings listed here.

noun

  1. A twist or fold.
  2. Any of the folds on the surface of the brain.
  3. The shape of something rotating; a vortex.
  4. The state or condition of being convoluted.
  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.
  6. A function which maps a tuple of sequences into a sequence of tuples.
  7. One 360° turn in a spring or similar helix.

Etymology

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.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.