# ammonite

> English word · Noun · IPA /ˈæ.məˌnaɪt/ · frequency rank #69,637

## Definitions
1. Any of an extinct group of cephalopods of the subclass Ammonoidea; a fossil shell of such an animal.

## Etymology
From French ammonite, from Latin Ammōnis (cornū) (“horn of Ammon”), as it was called by Pliny the Elder in reference to coiling ram horns used to symbolise the Egyptian god Amun. Equivalent to Ammon + -ite.

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