Synonyms and antonyms of Radioactivity and radiation in American Thesaurus

alpha particle (noun)

the nucleus of a helium atom that is produced by some radioactive substances

atomic (adjective)

relating to or using the energy that is produced by splitting atoms (=breaking them apart)

becquerel (noun)

a unit for measuring radioactivity

carbon dating (noun)

a method of finding out the age of a very old object by measuring the amount of radioactive carbon it contains

cosmic radiation (noun)

a form of radiation that reaches the Earth from space

cosmic rays (noun)

cosmic radiation

electrosmog (noun)

informal the electromagnetic radiation from computers and cell phones, that some people think is harmful to health

fission (noun)

physics the process of dividing an atom in order to create energy

gamma rays (noun)

a type of radiation with a very short wavelength that can pass through solid objects

Geiger counter (noun)

a piece of equipment that finds and measures radioactivity

half-life (noun)

the amount of time that is needed for a substance to lose one half of its radioactivity

microwave (noun)

science a type of electromagnetic wave used in radio communication, radar, and cooking

plutonium (noun)

a chemical element that is a dense silvery radioactive metal. It is used in creating nuclear power and its symbol is Pu.

radiant (adjective)

science radiant heat is the energy produced by hot objects. It is in the form of infrared light that cannot be seen.

radiation (noun)

chemistry a form of energy produced during a nuclear reaction that is used for making electrical power but can also kill or harm humans who receive too much of it

radiation (noun)

consisting of radiation, or caused by radiation

radiation (noun)

physics a type of energy that is sent out in the form of electromagnetic waves, for example, heat, light, or radio waves

radioactive (adjective)

a radioactive substance contains a very harmful form of energy that is produced during nuclear reactions. This energy is called radiation.

radioactive waste (noun)

the harmful waste that is produced while making nuclear energy

radioactivity (noun)

a form of energy that is produced by a radioactive substance and is harmful in large amounts

radioactivity (noun)

the ability that some substances have to produce energy in the form of radiation

radium (noun)

a radioactive element used in the treatment of cancer

radon (noun)

a chemical element that is a rare radioactive gas. Its symbol is Rn.

unstable (adjective)

chemistry relating to a radioactive substance whose nucleus breaks down to release radioactivity

uranium (noun)

a chemical element that is a metal and is used for producing nuclear energy because it is radioactive

X-ray (noun)

a type of radiation that is used for looking inside things, for example your body or a suitcase