opisthion

noun
opis·​thi·​on | \ ə-ˈpis-thē-ˌän How to pronounce opisthion (audio) \
plural opisthia\ -​thē-​ə How to pronounce opisthia (audio) \ or opisthions

Medical Definition of opisthion

: the median point of the posterior border of the foramen magnum

Learn More about opisthion

Cite this Entry

“Opisthion.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/opisthion. Accessed 3 Aug. 2020.

Comments on opisthion

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

WORD OF THE DAY

Test Your Vocabulary

July 2020 Words of the Day Quiz

  • papercraft sunset
  • Which is a synonym of mien?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!