# siriometer

> English word · Noun

## Definitions
1. A unit of distance equal to one million astronomical units or 15.813 light-years.

## Etymology
From Sirius and meter. It is roughly twice the distance from Earth to the star Sirius.

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