Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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adj
Semi-circular, like the uncial or lunate sigma (similar to English C).
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Curved in two directions, like the letter "S", or the Greek ς (sigma); having a serpentine shape.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: S-shaped
Antonyms: none provided
adj
Curved in two directions, like the letter "S", or the Greek ς (sigma); having a serpentine shape.
Exhibiting logistic growth; having a graph that accelerates until it reaches a carrying capacity.
Definition source: English Wiktionary via Wiktextract
Topics: mathematics, sciences
No example sentence was provided for this meaning.
Synonyms: S-shaped
Antonyms: none provided
adj
Relating to the sigmoid colon.
Definition source: English Wiktionary via Wiktextract
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Synonyms: sigmoidal
Antonyms: none provided
noun
Ellipsis of sigmoid colon.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, ellipsis
Topics: anatomy, medicine, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Ellipsis of sigmoid function.
Definition source: English Wiktionary via Wiktextract
Usage: abbreviation, alt-of, ellipsis
Topics: mathematics, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adjective
of or relating to the sigmoid flexure in the large intestine
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: sigmoidal
Antonyms: none provided
adjective
curved in two directions (like the letter S)
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Etymology tree Ancient Greek σῖγμᾰ (sîgmă) Ancient Greek -ο- (-o-) Proto-Indo-European *weyd- Proto-Indo-European *-os Proto-Indo-European *wéydos Proto-Hellenic *wéidos Ancient Greek εἶδος (eîdos) Proto-Indo-European *-os Proto-Indo-European *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ειδής (-eidḗs) Ancient Greek σῑγμοειδής (sīgmoeidḗs)bor. English sigmoid 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.
Across languages
7 source translations are retained for this English entry.
