Definition of impacted in English:

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Pronunciation: /imˈpaktəd/


1chiefly Medicine Pressed firmly together, in particular.
Example sentences
  • The impacted, partially air-filled material was seen in the distal esophagus.
  • This maneuver adducts the fetal posterior shoulder in an attempt to rotate the shoulders out of the impacted position and into an oblique plane for delivery.
  • Common examples of these latter disorders include disturbance of liver cell function by acute hepatitis and obstruction of the bile ducts by impacted gallstones.
1.1(Of a tooth) wedged between another tooth and the jaw.
Example sentences
  • An impacted tooth is at higher risk of cavities because they are often difficult to clean properly.
  • In the past, removal of impacted wisdom teeth has been recommended even if the patient has not been experiencing problems.
  • People who have impacted wisdom teeth that are not causing problems do not need to have them removed.
1.2(Of a fractured bone) having the parts crushed together.
Example sentences
  • Dr Johnson said this could be due to an impacted fracture, which did not always show up on x-rays, or a second fall.
  • On closer inspection a radiologist's report confirmed an impacted fracture, but the report never reached Dr Blakeley.
  • An impacted mutton bone was removed from the right pyriform fossa by hypopharyngoscopy under general anesthesia.
1.3(Of feces) lodged in the intestine.
Example sentences
  • Stories about pounds of impacted fecal matter lodged in colon walls are myths.
2Strongly affected by something: grandiose planning projects have had deleterious effects on impacted social groups
More example sentences
  • Most of these effects are likely to be sublethal, but the implications for the long-term survival of populations inhabiting impacted areas can be profound.

For editors and proofreaders

Syllabification: im·pact·ed

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