. "The chemical reactions and pathways resulting in the breakdown of purine deoxyribonucleoside triphosphate, a compound consisting of a purine base linked to a deoxyribose sugar esterified with triphosphate on the sugar." . . . . "purine deoxyribonucleoside triphosphate catabolic process" . "purine deoxyribonucleoside triphosphate breakdown" . "purine deoxyribonucleoside triphosphate catabolism" . "purine deoxyribonucleoside triphosphate degradation" . . . . . .