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impaction

資料來源 : pyDict

裝緊,壓緊

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Impaction \Im*pac"tion\, n. [L. impactio a striking : cf. F.
   impaction.]
   1. (Surg.) 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.

   2. 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.

資料來源 : WordNet®

impaction
     n 1: the condition of being pressed closely together and firmly
          fixed
     2: a disorder in which feces are impacted in the lower colon
     3: a disorder in which a tooth is so crowded in its socket that
        it cannot erupt normally [syn: {impacted tooth}]
     4: a sharp collision produced by striking or dashing against
        something [syn: {impingement}]
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