sigmoid

Meaning

Adj

1. (archaic) Semi-circular, like the uncial or lunate sigma (similar to English C).
2. Curved in two directions, like the letter "S", or the Greek ς (sigma); having a serpentine shape.
3. Curved in two directions, like the letter "S", or the Greek ς (sigma); having a serpentine shape.
4. Relating to the sigmoid colon.

Noun

1. (abbreviation, alt-of, ellipsis) Ellipsis of sigmoid colon.
2. (abbreviation, alt-of, ellipsis) Ellipsis of sigmoid function.

Synonyms

sigmoidal

inflection

sweep

S-shaped

retroflection

contrary flexure

Translations

sigmoidal

sigmoïde

sigmoide

s-förmig

sigmoide

con forma simile ad una S

sigmoïd

S-vormig

sigmóide

em forma de sigma

da letra S

sigmoideo

de forma similar a las letra S

sigmoidal

σ harfi şeklindeki

Pronounced as (IPA)

/ˈsɪɡ.mɔɪd/

Etymology

Cognate with French: sigmoïde

In summary

Borrowing from Ancient Greek σῑγμοειδής (sīgmoeidḗs, “of the shape of sigma”), from σῖγμᾰ (sîgmă, “sigma”) + -ο- (-o-) + -ειδής (-eidḗs, “-oid, -like”); Equivalent to sigma + -oid. Compare with French sigmoïde.