Impaction

The driving of one fragment of bone into another so that the fragments are not movable upon each other; as, impaction of the skull or of the hip.

An immovable packing; (Med.), a lodgment of something in a strait or passage of the body; as, impaction of the fetal head in the strait of the pelvis; impaction of food or feces in the intestines of man or beast.

a disorder in which a tooth is so crowded in its socket that it cannot erupt normally

a disorder in which feces are impacted in the lower colon

the condition of being pressed closely together and firmly fixed