Orbitolina

noun
Or·​bi·​to·​li·​na | \ -lēnə \

Definition of Orbitolina

: a genus of foraminiferans very abundant in the Cretaceous having a bowl-shaped or depressed conic siliceous test with agglutinated sandy particles

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!

History and Etymology for Orbitolina

New Latin, from Orbitolites + -ina

Keep scrolling for more

Learn More about Orbitolina

Statistics for Orbitolina

Cite this Entry

“Orbitolina.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Orbitolina. Accessed 21 Oct. 2020.

Comments on Orbitolina

What made you want to look up Orbitolina? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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