impaction

== English == === Etymology === From Latin impingere (“to dash against, impinge”). === Pronunciation === IPA(key): /ɪmˈpækʃən/ Rhymes: -ækʃən === Noun === impaction (countable and uncountable, plural impactions) Compression; the packing together of loose matter. something packed together tightly; a mass of densely-packed matter (medicine) A solid, immobile bulk of stool. (dentistry) Failure of a tooth to erupt into the dental arch, because of adjacent teeth, dense overlying bone, excessive soft tissue, or other factor. (education) The situation where an educational institute, usually a college or university, receives more applications from qualified applicants than the number of spaces available, meaning that meeting the minimum admission requirements does not guarantee acceptance. ==== Derived terms ==== ==== Translations ====