ammonite

noun am·mo·nite \ ˈa-mə-ˌnīt \
Updated on: 11 Nov 2017

Definition of ammonite

:any of a subclass (Ammonoidea) of extinct cephalopods especially abundant in the Mesozoic age that had flat spiral shells with the interior divided by septa into chambers

ammonitic

play \ˌa-mə-ˈni-tik\ adjective

Recent Examples of ammonite from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ammonite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of ammonite

New Latin ammonites, from Latin cornu Ammonis, literally, horn of Ammon


Ammonite

noun Am·mon·ite \ ˈa-mə-ˌnīt \

Definition of Ammonite

:a member of a Semitic people who in Old Testament times lived east of the Jordan between the Jabbok and the Arnon

Ammonite

adjective

Illustration of ammonite

Origin and Etymology of ammonite

Late Latin Ammonites, from Hebrew ʽAmmōn Ammon (son of Lot), descendant of Ammon


Learn More about ammonite


Seen and Heard

What made you want to look up ammonite? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

marked by intense feeling

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!