sigmoid
English
WOTD – 19 May 2007
Etymology
From Ancient Greek σιγμοειδής (sigmoeidḗs), from σίγμα (sígma) or σῖγμα (sîgma, “sigma”) + εἶδος (eîdos, “form, likeness”). Compare with French sigmoïde.
Pronunciation
- IPA(key): /ˈsɪɡ.mɔɪd/
Audio (US) (file)
Adjective
sigmoid (not comparable)
- (geometry) Curved in two directions, like the letter "S", or the Greek ς (sigma).
- Having a serpentine shape; resembling S or ʃ
- (mathematics) Exhibiting logistic growth; having a graph that accelerates until it reaches a carrying capacity
- (geometry, archaic) Semi-circular, like the lunar sigma (similar to English C).
- (anatomy) Relating to the sigmoid flexure of the large intestine.
Synonyms
Derived terms
Derived terms
- sigmoid artery
- sigmoid colon
- sigmoid flexure
- sigmoid fossa
- sigmoid function
- sigmoid groove
- sigmoidoscope
- sigmoid sinus
- sigmoid valve
- subsigmoid
Translations
in geometry: curved in two directions
|
in geometry: semi-circular
in anatomy: relating to the sigmoid flexure of the large intestine
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.
Noun
sigmoid (plural sigmoids)
- (mathematics) A function having a graph whose shape is sigmoid. See Wikipedia and Mathworld[1].
Translations
in mathematics: function having a graph whose shape is sigmoid
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