Adjective

(en adjective)

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

* 1880 , W. S. Barnard, "Protoplasmic Dynamics," The American Naturalist , vol. 14, no. 4, p. 237:

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.

* 1970 , Kent Kirby, "Art, Technology and the Liberal Arts College," Art Journal , vol. 29, no. 3, p. 330:

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

* 2001 , Elissa Gootman, " An Intricate Bond; New Haven's past and future are so tied to Yale, but it took 300 years for the two to get along," New York Times , 18 Feb.:

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.

Adjective

(en adjective)

Having impact.

* {{quote-book

, year=1950 , year_published=2008 , edition=Digitized , editor= , author= , title=Movies: A Psychological Study , chapter= citation , genre= , publisher=Free Press , isbn= , page=22 , passage=We might suppose that some of the most impactful heroines of current films would combine these two functions: that of the good-bad girl ... }}

* 1969 , W. James Popham, "Curriculum Materials," Review of Educational Research , vol. 39, no. 3, p. 321:

It is strongly recommended that in the future such investigations not be reported in the literature unless they are designed to test the effects of some hopefully impactful treatment variation.

* 1982 , S. E. Taylor and S. C. Thompson, "Stalking the Elusive 'Vividness' Effect," Psychological Bulletin , vol. 89, no. 2, p. 155:

Everyone knows that vividly presented information is impactful and persuasive.

* 2001 , A. Mukherjee and W. D. Hoyer, "The Effect of Novel Attributes on Product Evaluation," The Journal of Consumer Research , vol. 28, no. 3, p. 463:

A dominant finding in psychology and consumer behavior has been that negative information is more impactful than positive information.

*