Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or arranged like rays or radii.
  • adj. Radiating from or converging to a common center.
  • adj. Having or characterized by parts so arranged or so radiating.
  • adj. Moving or directed along a radius.
  • adj. Anatomy Of, relating to, or near the radius or forearm.
  • adj. Developing symmetrically about a central point.
  • n. A radial part, such as a ray, spoke, or radius.
  • n. A radial tire.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. arranged like rays that radiate from, or converge to a common centre
  • adj. moving along a radius
  • adj. of, or relating to the radius bone
  • n. a radial tire / radial tyre

from the GNU version of the Collaborative International Dictionary of English

  • adj. Of or pertaining to a radius or ray; consisting of, or like, radii or rays; radiated.

from The Century Dictionary and Cyclopedia

  • Of or pertaining to a ray or a radius (or radii); having the character or appearance of a ray or a radius; grouped or appearing like radii or rays; shooting out as from a center; being or moving in the direction of the radius.
  • Specifically— In anatomy, of or pertaining in any way to the radius (see radius, 2): as, the radial artery, nerve, vein; radial articulations or movements; the radial side or aspect of the arm, wrist, or hand; the radial group of muscles; the radial pronator or supinator.
  • In zoology, rayed, radiate, or radiating; of or pertaining to the rays, arms, or radiating processes of an animal; relating to the radially disposed or actinomeric parts of the Radiata and similar animals. See cut under medisiform.
  • In ichthyology, of or pertaining to the radialia. See radiale .
  • In botany:
  • Belonging to a ray, as of an umbel or of a flower-head in the Compositæ.
  • Developing uniformly on all sides of the axis: opposed to bifacial or dorsiventral.
  • n. A radiating or radial part: a ray.
  • n. The fourth joint, counting from the base, of the pedipalp of a spider.
  • n. In ichthyology, one of the cartilaginous rays supporting the median fins of elasmobranchs.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. arranged like rays or radii; radiating from a common center
  • adj. issuing in rays from a common center; relating to rays of light
  • n. pneumatic tire that has radial-ply casing
  • adj. relating to or near the radius
  • adj. relating to or moving along or having the direction of a radius

Etymologies

Middle English, from Medieval Latin radiālis, from Latin radius, ray.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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  • Its twin radial J-type engines are capped in gleaming chrome and trail long delicate-looking finials behind the ship's single-pilot compartment.

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  • Certain American radial engines were made previous to 1914, the principal being the Albatross six-cylinder engines of 50 and 100 horse-powers.

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  • To answer your question though, in short, radial velocity speed at which an object is moving away from or toward an observer along the line of sight.

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  • I got unprecedented access to the headquarters of the infamous Soviet intelligence agency, the KGB, and in Leningrad I had an exclusive interview with Dr. Svyatoslav Fyodorov, the ophthalmologist who developed the revolutionary vision correction procedure known as radial keratotomy.

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  • PRK, performed in the physician's office with local anesthesia, is a far more sophisticated procedure than a controversial form of surgery called radial keratotomy (RK).

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  • And Firestone has made a renewed effort to recall radial tires of Ford Explorers and other SUVs from the '90s.

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  • But if they need to do it again, certainly they have other veins; and there's actually an artery in the arm that they can used called a radial artery.

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  • Typically, in these "transit" measurements, the dimmings merely suggest planets; their presence is confirmed by ground-based telescopes that look for the "wobble" - a method known as radial velocity measurements.

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  • Cell nuclei are shown in blue, nuclei of neural stem cells are shown in green, while so called radial stem cells, a subgroup of neural stem cells, are shown red.

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