fu·​su·​li·​nid ˌfyü-zə-ˈlī-nid How to pronounce fusulinid (audio)
: any of a family (Fusulinidae) of extinct marine foraminifers

Example Sentences

Recent Examples on the Web The traces of ancient invertebrates with astonishing names (crinoids, fusulinids, and so on) were just one of many signs that the landscape my coastal relatives used to mock for its monotony in fact harbored wonders. Ben Lerner, The New Yorker, 29 Mar. 2017

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

Word History


New Latin Fusulinidae, from Fusulina, a genus, from Latin fusus spindle + -ulus -ule + New Latin -ina, diminutive suffix

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of fusulinid was in 1941

Dictionary Entries Near fusulinid

Cite this Entry

“Fusulinid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fusulinid. Accessed 27 Mar. 2023.

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