proatlas

noun
pro·​at·​las | \ -ˈat-ləs How to pronounce proatlas (audio) \

Medical Definition of proatlas

: a rudimentary vertebra that lies between the atlas and the occipital bone and that occurs as a regular feature of the structure of reptiles and may occur as an anomaly in humans

Learn More about proatlas

Cite this Entry

“Proatlas.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/proatlas. Accessed 19 Sep. 2020.

Comments on proatlas

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

WORD OF THE DAY

Test Your Vocabulary

Homophone Quiz

  • three bears two of them look like theyre whispering to a third bear who looks chuffed to be the center of attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

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!