# sigmoidal

> English word · Adjective

## Definitions
1. sigmoid; S-shaped.
2. Characterized by a sigmoid curve or function

## Etymology
From sigmoid + -al.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sigmoidal