# catabasion

> English word · Noun

## Definitions
1. A vault under the altar of a Greek church.

## Etymology
From Ancient Greek καταβάσιον (katabásion, “a way down”), from κατάβασις (katábasis).

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