(astronomy, physics) A region of high-energy charged particles which partly surrounds a planet or star, trapped by its magnetic field and characterized by intense radiation.

(acoustics) The impedance of any vibrating solid or fluid that radiates sound in the surrounding medium.

A plant of the genus Peperomia, many of which are commonly used as houseplants.

plural of radiation fog

plural of gamma radiation

plural of radiator plant

plural of radiation belt

plural of radiation sickness

plural of radiation pyrometer

plural of radiation pressure