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Definition of ammonite

ammonite

/ˈæm.ə.naɪt/
am · mo · nite

Plural:ammonites
•
Adjective:ammonitic
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ammonite Lexical Profile

ammonite Game Scores & Validity

• noun

1

An extinct marine mollusk of the cephalopod class Ammonoidea, characterized by a flat, typically coiled spiral shell divided into internal chambers, widely found as fossils from the Devonian to the Cretaceous periods.

Example

"The paleontologist carefully extracted a beautifully preserved ammonite from the Jurassic limestone."

Photo by Eunostos / CC BY-SA 4.0

2

A member of an ancient Semitic people who lived east of the Jordan River and frequently clashed with the Israelites in biblical times.

Example

"Historical texts document that King David's forces engaged in a lengthy conflict against the Ammonites."

Word Nuance & Usage

When referring to the extinct fossilized cephalopod, the word is written in lowercase. However, when referring to the ancient Semitic people of the biblical era, it is capitalized as 'Ammonite'.

• Rhymes for ammonite

Word Origin & Etymology

From Medieval Latin 'ammonites', short for 'cornu Ammonis' (horn of Ammon). The fossil shells were named for their resemblance to the tightly coiled ram's horns associated with the Egyptian god Ammon (Amun).

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Ammonite. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ammonite
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