- (of an angle) less than 90°.
- (of a triangle) containing only acute angles.
Origin of acute
Examples from the Web for acuteness
She may have seen into her mother's attitude with an acuteness much older than her actual years.The Golden Scarecrow|Hugh Walpole
We have already had occasion to notice Dr. Macleod's acuteness of intellect.Western Worthies|J. Stephen Jeans
But the deep earnestness of her enthusiasm blunted the acuteness of her judgment.Monks, Popes, and their Political Intrigues|John Alberger
The acuteness of the pain in his head set his mind almost wandering.The Night Riders|Ridgwell Cullum
The acuteness with which these objections are enforced, is remarkable.
British Dictionary definitions for acuteness
- (of an angle) less than 90°
- (of a triangle) having all its interior angles less than 90°
- arising suddenly and manifesting intense severity
- of relatively short durationCompare chronic (def. 2)
- (of a vowel or syllable in some languages with a pitch accent, such as ancient Greek) spoken or sung on a higher musical pitch relative to neighbouring syllables or vowels
- of or relating to an accent (´) placed over vowels, denoting that the vowel is pronounced with higher musical pitch (as in ancient Greek), with a certain special quality (as in French), etcCompare (for senses 8a, 8b): grave, circumflex
Word Origin for acute
Word Origin and History for acuteness
late 14c., originally of fevers and diseases, "coming and going quickly" (opposed to a chronic), from Latin acutus "sharp, pointed," figuratively "shrill, penetrating; intelligent, cunning," past participle of acuere "sharpen" (see acuity). Meaning "sharp, irritating" is from early 15c. Meaning "intense" is from 1727. Related: Acutely; acuteness.