An angle whose measure is between 0° and 90°. Compare obtuse angle.
The wind roared and shrieked in its wild fury, and such was its force that I fell in an acute angle.
The Pacha of Many Tales Frederick Marryat
At the bottom of the falls the river turns an acute angle and flows to the west.
One Day’s Courtship Robert Barr
It went down at an acute angle for some fifty feet, the floor being covered with broken stone.
The Last Galley Arthur Conan Doyle
Then both our chins assumed an acute angle and remained thus.
The Wit and Humor of America, Volume VIII (of X) Various
Her figure might have served to illustrate all the doctrines of the acute angle.
Discipline Mary Brunton
As in the triangle aei, let the angle at i, be taken for an acute angle.
The Way To Geometry Peter Ramus
The Osprey, closing up from the south, held a course at an acute angle with that of the fugitive, to head her off.
The North Pacific Willis Boyd Allen
He struck it at an acute angle, and that showed him he had made a good line.
A Simpleton Charles Reade
The detachment moved northwestward from Sinkat, at an acute angle to its morning’s march.
The Four Feathers A. E. W. Mason
It is perforated near the most acute angle and also through the base.
The Archaeology of the Yakima Valley Harlan Ingersoll Smith
An angle that measures less than ninety degrees but more than zero degrees. (Compare obtuse angle and right angle.)
- Acute anterior poliomyelitis
. an acute viral disease, usually affecting children and young adults, caused by any of three polioviruses, characterized by inflammation of the motor neurons of the brain stem and spinal cord, and resulting in a motor paralysis, followed by muscular atrophy and often permanent deformities. Historical Examples Soon after this, Kling and Levaditi published their […]
Insurance. a person who computes premium rates, dividends, risks, etc., according to probabilities based on statistical records. (formerly) a registrar or clerk. noun (pl) -aries a person qualified to calculate commercial risks and probabilities involving uncertain future events, esp in such contexts as life assurance n. 1550s, “registrar, clerk,” from Latin actuarius “copyist, account-keeper,” from […]
- Acute ascending paralysis
acute ascending paralysis acute ascending paralysis n. Paralysis having a rapid course, beginning in the legs and progressively involving the trunk, arms, and neck. Also called Landry’s paralysis.
- Acute arch
noun another name for lancet arch Historical Examples The latter has an acute arch, without moulding, constructed within it, apparently to strengthen the walls. Bell’s Cathedrals: Southwark Cathedral George Worley
- Acute bisectrix
See under (def 1). Crystallography. an imaginary line either the acute angle (acute bisectrix) or the obtuse angle (obtuse bisectrix) of the optic axes of a biaxial crystal. Geometry. a bisector. noun (pl) bisectrices (baɪˈsɛktrɪˌsiːz) another name for bisector the bisector of the angle between the optic axes of a crystal