different between spiral vs convolution

English

Etymology

From Middle French spirale, from Medieval Latin spiralis, from Latin spira, from Ancient Greek ?????? (speíra, “wreath, coil, twist”).

Pronunciation

• IPA^(key): /?spa???l/
• Rhymes: -a???l

Noun

spiral (plural spirals)

1. (geometry) A curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point.
2. (informal) A helix.
3. A self-sustaining process with a lot of momentum involved, so it is difficult to accelerate or stop it at once.

Derived terms

Translations

Adjective

spiral (not comparable)

1. Helical, like a spiral

Translations

Verb

spiral (third-person singular simple present spirals, present participle (US) spiraling or (UK) spiralling, simple past and past participle (US) spiraled or (UK) spiralled)

1. (intransitive) To move along the path of a spiral or helix.

   The falling leaves spiralled down from the tree.

2. (transitive) To cause something to spiral.

   You need to learn how to spiral a ball.

3. (figuratively, intransitive) To increase continually.

   Her debts were spiralling out of control.

Translations

Further reading

• spiral on Wikimedia Commons.Wikimedia Commons

Anagrams

• Aprils, Plairs, prials

Danish

Pronunciation

Noun

spiral c (singular definite spiralen, plural indefinite spiraler)

1. spiral

Declension

Further reading

• “spiral” in Den Danske Ordbog
• “spiral” in Ordbog over det danske Sprog

French

Pronunciation

• IPA^(key): /spi.?al/

Adjective

spiral (feminine singular spirale, masculine plural spiraux, feminine plural spirales)

1. spiral

Noun

spiral m (plural spiraux)

1. spiral

Further reading

• “spiral” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Northern Sami

Pronunciation

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Noun

spiral

1. hip

Inflection

This noun needs an inflection-table template.

Further reading

• Koponen, Eino; Ruppel, Klaas; Aapala, Kirsti, editors (2002-2008) Álgu database: Etymological database of the Saami languages?^[1], Helsinki: Research Institute for the Languages of Finland

Norwegian Bokmål

Etymology

From Medieval Latin spiralis, from Latin spira

Noun

spiral m (definite singular spiralen, indefinite plural spiraler, definite plural spiralene)

1. a spiral, coil
2. a coil (contraceptive device)

Derived terms

• spiralfjær
• spiraltrapp

References

• “spiral” in The Bokmål Dictionary.

Norwegian Nynorsk

Etymology

From Medieval Latin spiralis, from Latin spira

Noun

spiral m (definite singular spiralen, indefinite plural spiralar, definite plural spiralane)

1. a spiral, coil
2. a coil (contraceptive device)

Derived terms

• spiraltrapp

References

• “spiral” in The Nynorsk Dictionary.

Romanian

Etymology

From French spiral

Adjective

spiral m or n (feminine singular spiral?, masculine plural spirali, feminine and neuter plural spirale)

1. spiral

Declension

Further reading

• spiral in DEX online - Dic?ionare ale limbii române (Dictionaries of the Romanian language)

Swedish

Pronunciation

Noun

spiral c

1. spiral

Declension

English

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.

Pronunciation

• Rhymes: -u???n

Noun

convolution (countable and uncountable, plural convolutions)

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. State or condition of being convoluted.
5. (mathematics) A form of moving average.
6. (computing) A function which maps a tuple of sequences into a sequence of tuples.
7. One 360° turn in a spring or similar helix. A keyring contains 2 convolutions.

Related terms

• convolve
• convolute
• convoluted

Translations

Further reading

• convolution in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• convolution in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

French

Etymology

Formed from Latin convolutus, with the suffix -tion.

Pronunciation

Noun

convolution f (plural convolutions)

1. convolution

Further reading

• “convolution” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).