Medical Definition of acute
1: sensing or perceiving accurately, clearly, effectively, or sensitively <acute vision>
2a: characterized by sharpness or severity of sudden onset <acute pain brought on by injury> <an acute infection>b (1): having a sudden onset, sharp rise, and short course <acute illness> <an acute inflammation>—compare chronic 2a (2): acute care <an acute hospital>c: lasting a short time <acute experiments>
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