• (sciences) The progressive removal of material by any of a variety of processes such as vaporization under heat or chipping. [Mid 20th century.]
  • (medicine) The surgical removal of a body part, an organ, or especially a tumor; the removal of an organ function; amputation. [First attested around 1350 to 1470.]
  • (obsolete) A carrying or taking away; removal. [First attested around 1350 to 1470.]
  • (geology) The removal of a glacier by melting and evaporation; the lowering of a land surface by any of several means, as in wind erosion, mass wasting. [Mid 20th century.]

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