acute

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acute

1. Maths
a. (of an angle) less than 90°
b. (of a triangle) having all its interior angles less than 90°
2. of a disease
a. arising suddenly and manifesting intense severity
b. of relatively short duration
3. (of a hospital, hospital bed, or ward) intended to accommodate short-term patients with acute illnesses

acute

[ə′kyüt]
(biology)
Ending in a sharp point.
(medicine)
Referring to a disease or disorder of rapid onset, short duration, and pronounced symptoms.
References in classic literature ?
Her feelings are tolerably acute, and she is so charmingly artless in their display as to afford the most reasonable hope of her being ridiculous, and despised by every man who sees her.
His enthusiasm was sincere and his criticism acute.
At night, one could distinguish nothing of all that mass of buildings, except the black indentation of the roofs, unrolling their chain of acute angles round the place; for one of the radical differences between the cities of that time, and the cities of the present day, lay in the façades which looked upon the places and streets, and which were then gables.