erasion

erasion

[ih-rey-zhuhn, -shuhn]
noun
1.
the act of erasing.
2.
Surgery.
a.
the scraping away of tissue, especially of bone.
b.
Also called arthrectomy. excision of a joint.

Origin:
1780–90; erase + -ion

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World English Dictionary
erasion (ɪˈreɪʒən)
 
n
1.  the act of erasing; erasure
2.  the surgical scraping away of tissue, esp of bone

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