ammonoid
ammonoid · ammonoids
An extinct cephalopod of the subclass †AmmonoideaAn extinct cephalopod of the subclass †Ammonoidea (including ammonites).
Meaning
1 sensesAn extinct cephalopod of the subclass †Ammonoidea (including ammonites).
More definitions
- one of the coiled chambered fossil shells of extinct mollusks
Origin
From the scientific name Ammonoidea, equivalent to Ammon + -oid.From the scientific name Ammonoidea, equivalent to Ammon + -oid.
Wiktionary, CC BY-SA 4.0 · source
Dictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.