Ra"di*al (rā"d&ibreve;*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.