# semiology

> English word · Noun

## Definitions
1. Semiotics, the study of signs.
2. The science of the signs or symptoms of disease; symptomatology.
3. The art of using signs in signalling.
4. The symptom expression of an epileptic seizure.

## Etymology
From New Latin semaeologia, from Ancient Greek σημεῖον (sēmeîon, “sign”) + -logia (“-logy”). By surface analysis, semio- + -logy.

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