sigmoid
English
WOTD – 19 May 2007
Etymology
Borrowing from Ancient Greek σῑγμοειδής (sīgmoeidḗs, “of the shape of sigma”), from σῖγμᾰ (sîgma, “sigma”) + -ο- (-o-) + -ειδής (-eidḗs, “-oid, -like”); Equivalent to sigma + -oid. Compare with French sigmoïde.
Pronunciation
- IPA(key): /ˈsɪɡ.mɔɪd/
Audio (US) (file)
- Rhymes: -ɪɡmɔɪd
Adjective
sigmoid (not comparable)
- (archaic) Semi-circular, like the uncial or lunar sigma (similar to English C).
- Curved in two directions, like the letter "S", or the Greek ς (sigma); having a serpentine shape.
- Synonym: (informal) S-shaped
- (mathematics) Exhibiting logistic growth; having a graph that accelerates until it reaches a carrying capacity.
- (anatomy) Relating to the sigmoid colon.
- Synonym: sigmoidal
Derived terms
- parasigmoid
- rectosigmoid
- retrosigmoid
- sigmoid colon
- sigmoid flexure
- sigmoid function
- sigmoidicity
- sigmoidity
- sigmoid sinus
Translations
S-shaped, sigma-shaped
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relating to the sigmoid colon
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- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
Translations to be checked
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Noun
sigmoid (plural sigmoids)
- (anatomy) Ellipsis of sigmoid colon..
- (mathematics) Ellipsis of sigmoid function..[1]
Derived terms
- hysterocolposigmoidectomy
- megasigmoid
- mesosigmoid
- proctosigmoidectomy
- proctosigmoiditis
- proctosigmoidoscopy
- rectosigmoiditis
- sigmoidal
- sigmoidectomy
- sigmoiditis
- sigmoidocele
- sigmoidopexy
- sigmoidoscope
- sigmoidoscopic
- sigmoidoscopy
- sigmoidostomy
- ureterosigmoidostomy
References
- “sigmoid”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
- “sigmoid”, in Merriam-Webster Online Dictionary
- Eric W. Weisstein (July 19, 2021), “Sigmoid Function”, in Mathworld
Romanian
Etymology
From French sigmoïde.
Adjective
sigmoid m or n (feminine singular sigmoidă, masculine plural sigmoizi, feminine and neuter plural sigmoide)
- sigmoid
Declension
Declension of sigmoid
singular | plural | ||||||
---|---|---|---|---|---|---|---|
masculine | neuter | feminine | masculine | neuter | feminine | ||
nominative/ accusative | indefinite | sigmoid | sigmoidă | sigmoizi | sigmoide | ||
definite | sigmoidul | sigmoida | sigmoizii | sigmoidele | |||
genitive/ dative | indefinite | sigmoid | sigmoide | sigmoizi | sigmoide | ||
definite | sigmoidului | sigmoidei | sigmoizilor | sigmoidelor |