The striking of one body against another; collision.
The force or energy of a collision of two objects.
(chiefly, medicine) A forced impinging.
- The hatchet cut the wood on impact .
A significant or strong influence; an effect.
- His spine had an impingement; L4 and L5 made impact , which caused numbness in his leg.
- His friend's opinion had an impact on his decision.
- Our choice of concrete will have a tremendous impact on the building's mechanical performance.
* Adjectives often applied to "impact": social, political, physical, positive, negative, good, bad, beneficial, harmful, significant, great, important, strong, big, small, real, huge, likely, actual, potential, devastating, disastrous, true, primary.
* The adposition generally used with "impact" is "on" (such as in last example in section above)
* There are English speakers who are so ). In defensive editing, the solution is to replace the figurative noun sense with effect'' and the verb sense with ''affect , which nearly always produces an acceptable result. (Rarely, a phrase such as "the impact of late effects" is better stetted to avoid "the effect of [...] effects".)
* impact statement
* Western impact
To compress; to compact; to press or pack together.
(proscribed) To influence; to affect; to have an on.
- If fecal incontinence is caused by impacted stool in the rectum, the impaction must be removed.
To collide or strike.
- ''I can make the changes, but it will impact the schedule.
- When the hammer impacts the nail, it bends.
Some authorities object to the verb sense of impact'', meaning "to influence; to affect; to have an impact on" or "to collide or strike". Although most .
* harmfull (archaic)
of a kind likely to be damaging; injurious
- Wear a hat to protect your skin from harmful sunlight.
* Nouns to which "harmful" is often applied: effect, consequence, impact, influence, emission, chemical, ingredient, substance, gas, agent, additive, drug, radiation, dust, organism, plant, animal, insect, action, act, behavior, component, content, activity, interference, use.
* injurious; see also