sinus rhomboidalis
noun
sinus rhom·boi·da·lis
-ˌräm-ˌbȯid-ˈā-ləs 
: 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 Nov. 2024.
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