[ ak-ri-tahrk ]
/ ˈæk rɪˌtɑrk /
any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition.
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Origin of acritarch
OTHER WORDS FROM acritarchac·ri·tar·chous, adjective
Words nearby acritarch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020