QUADRI- Meaning of QUADRI- in English [quadri-] or quadr- or quadru- comb form [ME, fr. L; akin to L quattuor four] 1 a: four "quadrilateral" "quadrumanous" b: square "quadric" 2: fourth "quadricentennial" Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012