Meanings

amount of radioactivity

radiation dosimeter

radiation sickness

background radiation

low-level radioactive waste

artificial radioisotope

natural radioisotope

radiatio

coronal mass ejection

open fracture

war of national liberation

national liberation movement

national liberation

waste-water port (of a dam, sewer, etc.)

commercial television

emission standard

broadcast writer (TV and radio)

in-car announcement (on a train)

announcement calling for someone (e.g. "would XX please come to the ticket counter")

sense of space