# Thalassa

> English word · Proper noun

## Definitions
1. A moon of Neptune.
2. The primordial goddess of the sea.

## Etymology
From Ancient Greek θᾰ́λᾰσσᾰ (thắlăssă).

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