Ra″di‐al (rā″dĭ‐al), a. [Cf. F. radial. See Radius.] Of or pertaining to a radius or ray; consisting of, or like, radii or rays; radiated; as, (Bot.)radial projections; (Zoöl.)radial vessels or canals; (Anat.) the radial artery.
Radial symmetry. (Biol.) See under Symmetry.