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ainting, in which shading is produced by lines crossing each other at angles more or less acute; -- called also crosshatching.

Acute or sharp; -- opposed to grave or low; as, a high note.

e of iron or steel having an eye or tang by which it is attached to a wooden handle at an acute angle.

group of symptoms which follow exhausting diarrhea in young children, resembling those of acute hydrocephalus, or tubercular meningitis.

of incising, cutting, or penetrating, as with a sharp instrument; cutting; hence, sharp; acute; sarcastic; biting. "An incisive, high voice." G. Eliot. And her incisive smile accrediting That treason of false witness in my blush. Mrs. Browning.

An acute disease, almost exclusively infantile, characterized by inflammation of the anterior horns of the gray substance of the spinal cord. It is attended with febrile symptoms, motor paralysis, and muscular atrophy, often producing permanent deformities. Called also acute anterior poliomyelitis.

An epidemic affection characterized by acute nasal catarrh, or by inflammation of the throat or the bronchi, and usually accompanied by fever.

The quality or power of ready invention; quickness or acuteness in forming new combinations; ingeniousness; skill in devising or combining. All the means which human ingenuity has contrived. Blair.

Not sensitive; wanting sensation, or wanting acute sensibility. Tillotson. Ruskin.

Power of acute observation and deduction; penetration; discernment; perception. Quickest insight In all things that to greatest actions lead. Milton.

Acute of mind; sharp; penetrating; having or expressing mental acuteness; as, a man of keen understanding; a keen look; keen features. To make our wits more keen. Shak. Before the keen inquiry of her thought. Cowper.

A piece of steel sharpened to an acute edge or angle, and resting on a smooth surface, serving as the axis of motion of a pendulum, scale beam, or other piece required to oscillate with the least possible friction. Knife-edge file. See Illust. of File.

Acuteness; smartness; also, a smart trick or stratagem.[Obs.] Stanihurst.

A diamond-shaped figure usually with the upper and lower angles slightly acute, borne upon a shield or escutcheon. Cf. Fusil.

Having acute sight.

Quickness of scent; hence, nice discernment; acuteness. [Obs.] Dr. H. More.

A disease, the chief symptom of which is a very acute pain, exacerbating or intermitting, which follows the course of a nervous branch, extends to its ramifications, and seems therefore to be seated in the nerve. It seems to be independent of any structural lesion. Dunglison.

Perception; insight; acuteness. [Obs.] Methinks a man Of your sagacity and clear nostril should Have made another choice. B. Jonson.

Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.

Titanium dioxide occurring in acute octahedral crystals.