impactive

adj

1. Of, pertaining to, possessing, or caused by impact.

   “It is necessary to distinguish all forces sharply into two groups: 1, the attractional (gravity, adhesion, cohesion, chemism), and 2, the impactive or momentum forces of masses, molecules and atoms.”

   “As Rosemary came onto the beach a boy of twelve ran past her and dashed into the sea with exultant cries. Feeling the impactive scrutiny of strange faces, she took off her bathrobe and followed.”

   “Along with this revolution has come another, quieter and more subtle, but perhaps more impactive and ultimately more dynamic in its potential for change.”

   “And in what may prove to be the most impactive development, the university is nurturing the nexus of science and business to create a biotechnology sector that has already brought millions of dollars and hundreds of jobs into town.”