Pronunciation: /ˌreɪ.di.oʊˌæk.tɪˈvɪ.ti/
noun the property of certain substances to spontaneously emit radiation, often in the form of particles or electromagnetic waves
A1 Radioactivity is the emission of radiation.
A2 Some rocks contain radioactivity.
B1 Scientists study the effects of radioactivity on the environment.
B2 Nuclear power plants produce electricity through controlled radioactivity.
C1 The dangers of radioactivity are well-known in the scientific community.
C2 Advanced technology is used to monitor and measure radioactivity levels in contaminated areas.
adjective relating to or exhibiting radioactivity
A1 The radioactivity level in the area is safe for humans.
A2 Scientists use special equipment to measure radioactivity in the environment.
B1 The workers were trained to handle radioactive materials due to the radioactivity risk.
B2 The government conducted a study on the effects of radioactivity on the local wildlife.
C1 The researchers discovered a new method to detect low levels of radioactivity in water sources.
C2 The company implemented rigorous safety measures to prevent any leaks of radioactivity into the environment.
formal The scientist conducted a study on the effects of radioactivity on living organisms.
informal I heard that radioactivity can be harmful if not properly handled.
slang Dude, stay away from that area, it's full of radioactivity!
figurative The tension between them was like radioactivity, always present and potentially harmful.
radioactivities
more radioactive
most radioactive
radiates
will radiate
has radiated
is radiating
radioactivity
radioactive
to radioact
radioactivating
radioactive