Synonyms for sigma
- noun
Most common
Definitions
- n. 1
The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
Related words
- Word family
- sigmatism sigmoid
- Phrases
- the sigma lunar sigma lunate sigma
Forms
- Plural
- sigmas
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| sigma | steady |
Use in printed books, per decade from 1850 to 2019.