anu·​cle·​o·​late (ˈ)ā-n(y)ü-ˈklē-ə-ˌlāt How to pronounce anucleolate (audio)
: lacking a cell nucleolus
These findings were corroborated by the anucleolate mutant, which served as a control, since it lacks ribosomal RNA genes.Walter J. Gehring, Master Control Genes in Development and Evolution … , 1998

Word History


a- entry 2 + nucleol(us) + -ate entry 3

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of anucleolate was in 1955

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 anucleolate

Cite this Entry

“Anucleolate.” Dictionary, Merriam-Webster, Accessed 5 Mar. 2024.

Love words? Need even more definitions?

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