from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Tapering gradually to a sharp point, as the tips of certain leaves.
- transitive v. To sharpen or taper.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Tapering to a point; pointed.
- adj. Tapering to a long point at its apex.
- v. To render sharp or keen; to sharpen.
- v. To end in or come to a sharp point.
from the GNU version of the Collaborative International Dictionary of English
- adj. Tapering to a point; pointed
- transitive v. To render sharp or keen.
- intransitive v. To end in, or come to, a sharp point.
from The Century Dictionary and Cyclopedia
- To bring to a point; render sharp or keen: as, “to acuminate despair,”
- To taper or rise to a point.
- Pointed; acute.
- In ichthyology, drawn out in a long point: said of the fins.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. (of a leaf shape) narrowing to a slender point
- v. make sharp or acute; taper; make (something) come to a point
Latin acūminātus, past participle of acūmināre, to sharpen, from acūmen, acuteness; see acumen.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Late Latin acuminatus, past participle of acuminare, to sharpen to a point (Wiktionary)