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Keep "foraminifer" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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6 total sentences available.
The species of foraminifer which composes, almost to the exclusion of all others, the deep Atlantic mud, is called Globigerina. […] The natural home of the foraminifers appears to be in the deeper parts of the ocean, commencing where the regular inhabitants of limited depths terminate.
Source: wiktionary
The Heterostegina-bed at Malta is not without smaller Foraminifers (some of which we can identify,—as the Globigerina bulloides, Truncatulina lobatula, &c.), but the matrix is too stubborn to yield all its treasures.
Source: wiktionary
From a palæontological point of view the only part of a Foraminifer with which we have to deal is the shell or "test," […] Each bud of the compound Foraminifer is surrounded by its own shell, so that the whole comes to be composed of a number of chambers, each containing a mass of sarcode.
Source: wiktionary
The environmental significance of foraminifer abundance variations in Arctic cores is controversial[…]. One interpretation concludes that foraminifer-rich intervals represent interglacial conditions reflecting seasonally absent or reduced ice cover leading to increased productivity; intervals barren or nearly barren of foraminifers are considered to represent glacial conditions with thicker ice cover and lower productivity[…].
Source: wiktionary
Showing 4 of 6 available sentences.
Closest matches include foram, nummulite.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.