impaction

• ⇰ The driving of one fragment of bone into another so that the fragments are not movable upon each other; <as>as, <ex>impaction</ex> of the skull or of the hip</as>.
• ⇰ An immovable packing; <fld>(Med.)</fld>, a lodgment of something in a strait or passage of the body; <as>as, <ex>impaction</ex> of the fetal head in the strait of the pelvis; <ex>impaction</ex> of food or feces in the intestines of man or beast.</as>