tetr(a)- (21/23)

The medical prefix term tetr(a)- means “four”. 

Example Word: tetr(a)/logy 

Word Breakdown: Tetr(a)- is a prefix that means “four”,  -logy is a suffix that pertains to “study of”. 

Definition: In Tetralogy of Fallot, four heart defects occur at birth (congenital).