atri-
combining form
or atrio-
Etymology: New Latin atrium, from Latin
1. : atrium (sense 3, 4)
< atrial >
< atriopore >
2. : atrial and
< atriocoelomic >
< atrioventricular >
or atrio-
1.
< atrial >
< atriopore >
2.
< atriocoelomic >
< atrioventricular >