[rey-dee-uh l] /ˈreɪ di əl/
arranged like radii or rays.
having spokes, bars, lines, etc., arranged like radii, as a machine.
made in the direction of a radius; going from the center outward or from the circumference inward along a radius:
a radial cut.
Zoology. pertaining to structures that radiate from a central point, as the arms of a starfish.
of, like, or pertaining to a radius or a ray.
Anatomy, Entomology. of, relating to, or situated near the radius.
acting along or in the direction of the radius of a circle:
radial motion; radial velocity.
a radial section or construction.
(of lines, bars, beams of light, etc) emanating from a common central point; arranged like the radii of a circle
of, like, or relating to a radius or ray
spreading out or developing uniformly on all sides
of or relating to the arms of a starfish or similar radiating structures
(anatomy) of or relating to the radius or forearm
(astronomy) (of velocity) in a direction along the line of sight of a celestial object and measured by means of the red shift (or blue shift) of the spectral lines of the object Compare tangential (sense 2)
a radial part or section
short for radial tyre, radial drilling machine
c.1400, “of or like a ray or radius,” from Medieval Latin radialis, from Latin radius “shaft, rod; spoke of a wheel; beam of light” (see radius). As a noun, a type of tire, attested from 1965, short for radial-ply (tire). Related: Radially.
radial ra·di·al (rā’dē-əl)
- Radial artery
radial artery n. radial artery (rā’dē-əl) A major artery that follows the course of the radius on the ventral aspect of the forearm to the wrist, where it is felt as a pulse, and enters the hand. It supplies blood mostly to the thumb, index finger, and muscles of the forearm.
- Radial collateral artery
radial collateral artery n. An artery that is the anterior terminal branch of the deep brachial artery, anastomosing with the radial recurrent artery.
noun, Aeronautics. 1. an internal-combustion engine having the cylinders arranged in radial opposition, found mainly on older aircraft. noun 1. an internal-combustion engine having a number of cylinders arranged about a central crankcase
- Radial drilling machine
noun 1. a machine in which the drilling head is mounted to slide along a radial arm which can be rotated, raised, or lowered on a vertical mast to adjust the position of the drill above the workpiece Often shortened to radial