# sidero-

> English word · Prefix

## Definitions
1. Related to stars or constellations, as sidereal relationships.

## Etymology
From Latin sīdus, sideris, ("constellation").

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