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Meaning of erasion

e•ra•sion

Pronunciation: (i-rā'zhun, -shun), [key]
— n.
  1. the act of erasing.
    1. the scraping away of tissue, esp. of bone.
    2. Also calledarthrectomy.excision of a joint.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.