the.com/acute
sharp enough to matter right now — a triangle's angle, a pain's warning, a mind's edge.
means describes something intense but short-lived, or precisely sharp, as opposed to chronic or blunt.
from from latin acutus, past participle of acuere, to sharpen — the same root that gave us acid and acupuncture.
angle mathless than 90 degrees, technically
medical oppositechronic means long-term, not sudden
same rootshares latin roots with needle and edge