sinus rhomboidalis

noun

sinus rhom·​boi·​da·​lis -ˌräm-ˌbȯid-ˈā-ləs How to pronounce sinus rhomboidalis (audio)
: the posterior expanded and for a long time incompletely closed part of the neural groove of vertebrate embryos
also : an expansion of the central canal in the sacral region derived from it

Dictionary Entries Near sinus rhomboidalis

Cite this Entry

“Sinus rhomboidalis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/sinus%20rhomboidalis. Accessed 29 Mar. 2023.

Love words? Need even more definitions?

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


Which Came First?

  • baby chick with a brown egg
  • hot take or cold shoulder?
Name That Thing

You know what it looks like… but what is it called?

TAKE THE QUIZ
Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?

PLAY