Defn: A picture produced by the Röntgen rays upon a sensitive surface, photographic or fluorescent, especially a picture of opaque objects traversed by the rays.
RADIOGRAPHY
Ra`di*og"ra*phy, n.
Defn: Art or process of making radiographs. — Ra`di*o*graph"ic (#), *graph"ic*al (#), a. —Ra`di*o*graph"ic*al*ly, adv.
RADIOLARIA
Ra`di*o*la"ri*a, n. pl. Etym: [NL. See Radioli.] (Zoöl.)
Defn: Order of rhizopods, usually having a siliceous skeleton, or shell, and sometimes radiating spicules. The pseudopodia project from the body like rays. It includes the polycystines. See Polycystina.
RADIOLARIAN
Ra`di*o*la"ri*an, a. (Zoöl.)
Defn: Of or pertaining to the Radiolaria.
— n.
Defn: One of the Radiolaria.
RADIOLI Ra*di"o*li, n. pl.; sing. Radiolus (. Etym: [NL., dim. of L. radius radius: cf. L. radiolus a feeble sunbeam.] (Zoöl.)
Defn: The barbs of the radii of a feather; barbules.