Definition of coronary sinus in English:

coronary sinus

Syllabification: cor·o·nar·y si·nus

Entry from US English dictionary

noun

A wide venous channel about 2.25 centimeters in length that receives blood from the coronary veins and empties into the right atrium of the heart.

Definition of coronary sinus in:

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Word of the day envenom
Pronunciation: enˈvenəm
verb
put poison on or into; make poisonous