# basion

> English word · Noun

## Definitions
1. The middle of the anterior margin of the foramen magnum of the skull.

## Etymology
From New Latin, equivalent to basi- (“base”) + -ion (“cephalometric reference point”).

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