Nuclear

/ˈnjuːkliər/

Meaning & Definition

adjective
Relating to the nucleus of an atom or to nuclear energy.
The nuclear reactor generates electricity through the process of nuclear fission.
Relating to weapons that depend on nuclear reactions.
Countries with nuclear capabilities are often involved in discussions about disarmament.
Pertaining to the fundamental part of something.
The nuclear family model emphasizes a household consisting of two parents and their children.

Etymology

Derived from the Latin 'nucleus', meaning 'a kernel or seed'.

Common Phrases and Expressions

nuclear family:
A family unit consisting of two parents and their children.
nuclear option:
A drastic choice or action that eliminates all alternatives.
nuclear deterrent:
A military capability to deter aggression by the threat of nuclear retaliation.

Related Words

Slang Meanings

Extremely powerful or radical in effect.
That new technology is nuclear; it changes everything!
Used to describe something intensely impressive or cool.
The party was nuclear, everyone had a great time!