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nuclear US English

Of or relating to the nucleus of an atom

nuclear age US English

The period in history usually considered to have begun with the first use of the atomic bomb (1945). It is characterized by nuclear energy as a military, industrial, and sociopolitical factor

nuclear war US English

A war in which nuclear weapons are used

nuclear club US English

The nations possessing nuclear weapons

nuclear force US English

A strong attractive force between nucleons in the atomic nucleus that holds the nucleus together

nuclear-free US English

(Of a country or region) not having or allowing any nuclear weapons, materials, or power

nuclear fuel US English

A substance that will sustain a fission chain reaction so that it can be used as a source of nuclear energy

nuclear power US English

Electric or motive power generated by a nuclear reactor

nuclear waste US English

Radioactive waste material, for example from the use or reprocessing of nuclear fuel

nuclear energy US English

The energy released during nuclear fission or fusion, especially when used to generate electricity

nuclear family US English

A couple and their dependent children, regarded as a basic social unit

nuclear fission US English

A nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy

nuclear fusion US English

A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy

nuclear option US English

The most drastic or extreme response possible to a particular situation

nuclear physics US English

The physics of atomic nuclei and their interactions, especially in the generation of nuclear energy

nuclear weapon US English

A bomb or missile that uses nuclear energy to cause an explosion

nuclear winter US English

A period of abnormal cold and darkness predicted to follow a nuclear war, caused by a layer of smoke and dust in the atmosphere blocking the sun’s rays

nuclear medicine US English

The branch of medicine that deals with the use of radioactive substances in research, diagnosis, and treatment

nuclear reaction US English

A change in the identity or characteristics of an atomic nucleus that results when it is bombarded with an energetic particle, as in fission, fusion, or radioactive decay

nuclear threshold US English

A point in a conflict at which nuclear weapons are or would be brought into use

nuclear umbrella US English

The supposed protection gained from an alliance with a country possessing nuclear weapons

nuclear disarmament US English

The process of reducing in number or completely eliminating a country’s nuclear weapons

nuclear magnetic resonance US English

The absorption of electromagnetic radiation by a nucleus having a magnetic moment when in an external magnetic field, used mainly as an analytical technique and in diagnostic body imaging

Campaign for Nuclear Disarmament US English

A British organization which campaigns for the abolition of nuclear weapons worldwide and calls for unilateral disarmament

antinuclear US English

Opposed to the development of nuclear weapons or nuclear power

nonnuclear US English

Not involving or relating to nuclear energy or nuclear weapons

subnuclear US English

Occurring in or smaller than an atomic nucleus

reactor US English

An apparatus or structure in which fissile material can be made to undergo a controlled, self-sustaining nuclear reaction with the consequent release of energy

nuclear reactor in reactor US English

An apparatus or structure in which fissile material can be made to undergo a controlled, self-sustaining nuclear reaction with the consequent release of energy

thermonuclear US English

Relating to or using nuclear reactions that occur only at very high temperatures