• (geology) Relating to the erosion of a land mass; relating to the melting or evaporation of a glacier. [First attested in the mid 20th century.]
  • (grammar) Applied to one of the cases of the noun in some languages, the fundamental meaning of the case being removal, separation, or taking away, and to a lesser degree, instrument, place, accordance, specifications, price, or measurement. [First attested from around (1350 to 1470).]
  • (medicine) Relating to the removal of a body part, tumor, or organ. [First attested in the mid 20th century.]
  • (engineering, nautical) Sacrificial, wearing away or being destroyed in order to protect the underlying, as in ablative paints used for antifouling. [First attested in 1959.].
  • (obsolete) Pertaining to taking away or removing. [Attested from the mid 16th century until the early 18th century.]


  • An ablative material. [Mid 20th century.]
  • (grammar) The ablative case. [First attested around 1350 to 1470.]

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