# Thetis

> English word · Proper noun · IPA /ˈθɛtɪs/ · frequency rank #87,904

## Definitions
1. One of the nereids; the mother of Achilles
2. 17 Thetis, one of the main belt asteroids.

## Etymology
From Ancient Greek Θέτις (Thétis).

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