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ammonitoid

 - 3 dictionary results

am⋅mo⋅nite

1[am-uh-nahyt]
–noun
the coiled, chambered fossil shell of an ammonoid.

Origin:
1700–10; < NL Ammonites < ML (cornū) Ammōn(is) (lit., horn of Ammon ) + -ītes -ite 1 ; fossil so called from its resemblance to the horn of Jupiter Ammon


am⋅mo⋅nit⋅ic [am-uh-nit-ik] , adjective
am⋅mon⋅i⋅toid [uh-mon-i-toid] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

ammonite 
"cephalopod mollusk," 1706, coined by Bruguière from M.L. (cornu) Ammonis "horn of Ammon," the Egyptian god of life and reproduction, who was depicted with ram's horns, which the fossils resemble.
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
ammonite   (ām'ə-nīt')  Pronunciation Key 
Any of the ammonoids belonging to the order Ammonitida and living during the Jurassic and the Cretaceous Periods. Ammonites had a thick, very ornamental chambered shell with highly defined, wavy sutures between the chambers.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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