/ ɪnˈsɪʒn; NAmE / noun
[ C , U ] a sharp cut made in sth, particularly during a medical operation; the act of making a cut in sth :
Make a small incision below the ribs.
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WORD ORIGIN
late Middle English : from late Latin incisio(n-) , from Latin incidere cut into, from in- into + caedere to cut.