Sigmoid
Sigmoid adjective - Curved in two directions (like the letter S).
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Synonyms for Sigmoid
Turned back and sigmoid are semantically related. In some cases you can use "Turned back" instead an adjective "Sigmoid".
Turned back
Sigmoid and turned back are semantically related. Sometimes you can use "Sigmoid" instead an adjective "Turned back".
Mutual synonyms
Cite this Source
Turned back and Sigmoid. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/sigmoid/turned_back
Sigmoid & Turned back. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/sigmoid/turned_back>.
Turned back or Sigmoid. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/sigmoid/turned_back.
Google Ngram Viewer shows how "sigmoid" and "turned back" have occurred on timeline