plural of radioactive fallout

plural of radial distribution function

plural of radio shack

(slang, nautical) A room for hosting radio equipment.

plural of radio clock

(astronomy) a very large radio galaxy; a double radio source having an overall projected linear length exceeding 2 megaparsecs (or more specifically, 2×h₅₀⁻¹ Mpc)

plural of radar reflector

plural of radar image

An image produced using a radar.

plural of radio button