Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

sinus terminalis

noun sinus ter·mi·na·lis \-ˌtər-mi-ˈnā-ləs\

Medical Definition of sinus terminalis

  1. :  a circular blood sinus bordering the area vasculosa of the vertebrate embryo

Seen and Heard

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