# Ferro meridian

> English word · Proper noun

## Definitions
1. A meridian formerly used as a prime meridian; now defined as 18.160792° west.

## Etymology
So named because it runs through the island Ferro (El Hierro), considered the end of the known world by the Europeans at the time.

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