Nouns in english starting with R

• radiochlorine — Noun – English ～ a radioactive isotope of chlorine
• radiocommunication — Noun – English ～ medium for communication
• radiogram — Noun – English ～ a message transmitted by wireless telegraphy
• radiogram — Noun – English ～ a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)
• radiograph — Noun – English ～ a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)
• radiographer — Noun – English ～ a person who makes radiographs
• radiography — Noun – English ～ photography that uses other kinds of radiation than visible light
• radiography — Noun – English ～ the process of making a radiograph; producing an image on a radiosensitive surface by radiation other than visible light
• radioimmunoassay — Noun – English ～ immunoassay of a substance that has been radioactively labeled
• radioisotope — Noun – English ～ a radioactive isotope of an element; produced either naturally or artificially
• Radiolaria — Noun – English ～ marine protozoa
• radiolarian — Noun – English ～ protozoa with amoeba-like bodies and radiating filamentous pseudopods
• radiolocation — Noun – English ～ measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects
• radiologist — Noun – English ～ a medical specialist who uses radioactive substances and X-rays in the treatment of disease
• radiology — Noun – English ～ (radiology) examination of the inner structure of opaque objects using X rays or other penetrating radiation
• radiology — Noun – English ～ the branch of medical science dealing with the medical use of X-rays or other penetrating radiation
• radiolysis — Noun – English ～ molecular disintegration resulting from radiation
• radiometer — Noun – English ～ meter to detect and measure radiant energy (electromagnetic or acoustic)
• radiomicrometer — Noun – English ～ radiometer that is extremely sensitive
• radiopacity — Noun – English ～ opacity to X-rays or other radiation

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