Radial
Zell's Condensed Dictionary · 1879 · p. 38
(ra'de-al.) [From L. radius, the outer bone of the fore-arm.] (Anat.) A term designative of some part pertaining to the radius, or fore-arm of the human body; as, the radial artery or nerve, or the radial muscles, which are two muscles of the fore-arm, one of which bends the wrist, while the other extends it. RADIAL CURVES. (Geom.) Spiral curves, the ordinates of which all terminate in the centre of the including circle, and appear like so many semi-diameters. [s. 750]
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