Wiktionary:Word of the day/October 9

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Word of the day for October 9
acute adj
  1. Brief, quick, short.
  2. High or shrill.
  3. Intense, sensitive, sharp.
  4. Urgent.
  5. (botany) With the sides meeting directly to form an acute angle (at an apex or base).
  6. (geometry) Of an angle: less than 90 degrees.
  7. (geometry) Of a triangle: having all three interior angles measuring less than 90 degrees.
  8. (linguistics, chiefly historical) Of an accent or tone: generally higher than others.
  9. (medicine) Of an abnormal condition of recent or sudden onset, in contrast to delayed onset; this sense does not imply severity, unlike the common usage.
  10. (medicine) Of a short-lived condition, in contrast to a chronic condition; this sense also does not imply severity.
  11. (orthography) After a letter of the alphabet: having an acute accent.
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