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acritarch
[ ak-ri-tahrk ]
noun
, Paleontology.
- any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition.
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Other Words From
- acri·tarchous adjective
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Word History and Origins
Origin of acritarch1
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Example Sentences
K is an acritarch, the frequently spiny biological equivalent of a UFO.
From Scientific American
ACRITARCH, a kind of small fossil Hark, hark!
From Washington Post
The acritarch At Heaven’s gate sings; Been waiting here three million years, Three million falls and springs.
From Washington Post
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