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; (Zool.) radial vessels or canals; (Anat.) the radial artery. [ 1913 Webster ]
Radial symmetry. (Biol.) See under Symmetry. [ 1913 Webster ]
‖n.; pl.Radialia [ NL. See Radial. ] 1. (Anat.) The bone or cartilage of the carpus which articulates with the radius and corresponds to the scaphoid bone in man. [ 1913 Webster ]
2.pl. (Zool.) Radial plates in the calyx of a crinoid. [ 1913 Webster ]
. (Mach.) An engine, usually an internal-combustion engine of a certain type (the radial type) having several cylinders arranged radially like the spokes of a complete wheel. The semiradial engine has radiating cylinders on only one side of the crank shaft. [ Webster 1913 Suppl. ]
[さんけいかじょ, sankeikajo] (n) umbellate inflorescence; umbel (i.e. flower with a large number of flowers growing radially from a common center) [Add to Longdo]
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