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
plural -s : a diatom of the genus Asterionella

Word History


New Latin, from Greek asterion (neuter of asterios starry) + New Latin -ella

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near asterionella

Cite this Entry

“Asterionella.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!