CEFR C2

ammonoid

noun

Meaning

An extinct marine mollusk characterized by a coiled, chambered shell that lived during the Paleozoic and Mesozoic eras.

Examples

Paleontologists often use the complex patterns on ammonoid shells to date sedimentary rock layers.
The museum display featured a remarkably preserved ammonoid fossil with its original pearly luster intact.

Synonyms: fossil, mollusk, cephalopod, ammonite

Learn English that separates you from the crowd with Anaversity: private classes, Ani practice, Campus tools, and a public English-learning community.

ammonoid (C2)

noun

Pronunciation: ˈæməˌnɔɪd

Definition

An extinct marine mollusk characterized by a coiled, chambered shell that lived during the Paleozoic and Mesozoic eras.

Examples

Paleontologists often use the complex patterns on ammonoid shells to date sedimentary rock layers.
The museum display featured a remarkably preserved ammonoid fossil with its original pearly luster intact.

How to Use ammonoid

ammonoid fossil (collocation): the physical remains of an ammonoid — "The researcher discovered a rare ammonoid fossil in the riverbed."
ammonoid shell (collocation): the hard outer covering of the animal — "The intricate sutures on the ammonoid shell are key to identifying the species."

Synonyms of ammonoid

Words with a similar meaning to ammonoid:

Browse the full Anaversity dictionary