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Producing numerous radicles, or rootlets.

pl. of Radius.

A combining form indicating connection with, or relation to, a radius or ray; specifically (Anat.), with the radius of the forearm; as, radio-ulnar, radiomuscular, radiocarpal.

e of luminescence under the action of cathode rays, X rays, or any of the allied forms of radiation. -- Ra`di*o- ac*tiv"i*ty, n.

A group of Protozoa having both flagella and pseudopodia.

A substance or device that has its conductivity altered in some way by electric waves, as a coherer.

A picture produced by the Röntgen rays upon a sensitive surface, photographic or fluorescent, especially a picture of opaque objects traversed by the rays.

Art or process of making radiographs. -- Ra`di*o*graph"ic (#), *graph"ic*al (#), a. --Ra`di*o*graph"ic*al*ly, adv.

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.

Of or pertaining to the Radiolaria. -- n.

The barbs of the radii of a feather; barbules.

A hippurite.

An instrument designed for measuring the mechanical effect of radiant energy.

The use of the radiometer, or the measurement of radiation. -- Ra`di*o*met"ric (#), a.

tive modification or application of the thermopile, used for indicating minute changes of radiant heat, or temperature.

A radiotelegraphic station serving solely for determining the position of ships. The radius of operation of such stations was restricted by the International Radiotelegraphic Convention (1912) to 30 nautical miles.

An apparatus for the production of sound by the action of luminous or thermal rays. It is essentially the same as the photophone.

The art or practice of using the radiophone.

See Projector, above.

Direct observation of objects opaque to light by means of some other form of radiant energy, as the Röntgen rays. -- Ra`di*o*scop"ic (#), *scop"ic*al (#), a.