Definition of asterionella
1 capitalized : a small genus of narrowly linear diatoms (family Fragilariaceae) arranged in stellate free-floating colonies and often causing geraniumlike or fishy odors in public water supplies
2 plural -s : a diatom of the genus Asterionella
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Origin and Etymology of asterionella
New Latin, from Greek asterion (neuter of asterios starry) + New Latin -ella
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