അർത്ഥം : A radioactive gaseous element formed by the disintegration of radium. The heaviest of the inert gasses. Occurs naturally (especially in areas over granite) and is considered a hazard to health.
പര്യായപദങ്ങൾ : atomic number 86, radon
അർത്ഥം : A graduate nurse who has passed examinations for registration.
പര്യായപദങ്ങൾ : registered nurse