# upsila

> English word · Noun

## Definitions
1. plural of upsilon

## Etymology
From the Ancient Greek ὖ ψιλά (û psilá), plural construction of ὖ ψιλόν (û psilón).

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