sigmoid

From Wiktionary

Contents 1 English 1.1 Etymology 1.2 Pronunciation 1.3 Adjective 1.3.1 Synonyms 1.3.2 Derived terms 1.4 Noun

[edit] English

Wikipedia

[edit] Etymology

From Ancient Greek σιγμοειδής (sigmoeidēs) < σίγμα or σῖγμα (sigma) "sigma" + εἶδος (eidos) "form, likeness". Compare with French sigmoïde.

[edit] Pronunciation

• IPA: /ˈsɪg.mɔɪd/
•  Audio (US)^{help, file}

[edit] Adjective

sigmoid (not comparable)

1. (geometry) Curved in two directions, like the letter "S", or the Greek ς (sigma).
2. (geometry, archaic) Semi-circular, like the lunar sigma (similar to English C).
3. (anatomy) Relating to the sigmoid flexure of the large intestine.

[edit] Synonyms

• sigmoidal

[edit] Derived terms

• sigmoid artery
• sigmoid colon
• sigmoid flexure
• sigmoid fossa
• sigmoid groove
• sigmoid sinus
• sigmoid valve
• sigmoid function
• sigmoidoscope

[edit] Noun

sigmoid (plural sigmoids)

1. (mathematics) A function having a graph whose shape is sigmoid. See Wikipedia, Mathworld.