Definition of acuminating in English:

acuminating

adjective

Mineralogy
rare
  • Tapering or narrowing to a point; (Mineralogy, of three or more planes) meeting so as to form a point by their intersection (now rare).

Origin

Late 18th century; earliest use found in Richard Kirwan (1733–1812), chemist and mineralogist. From acuminate + -ing.

Pronunciation:

acuminating

/əˈkjuːmɪneɪtɪŋ/