Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “nuclear”

See all translations

nuclear

adjective uk   /ˈnjuː.klɪər/ us    /ˈnuː.kliː.ɚ/

nuclear adjective (POWER)

B2 being or using the power produced when the nucleus of an atom is divided or joined to another nucleus: nuclear energy/power a nuclear power plant the nuclear industryB2 relating to weapons, or the use of weapons, which use the power produced when the nucleus of an atom is divided or joined to another nucleus: a nuclear war/attack nuclear disarmament How many nations have a nuclear capability (= have nuclear weapons)?
More examples

nuclear adjective (PHYSICS)

specialized physics relating to the nucleus of an atom: nuclear fission/fusion/physics
Translations of “nuclear”
in Korean 핵의…
in Arabic نَوَوي…
in Portuguese nuclear…
in Catalan nuclear…
in Japanese 原子力の, 原子(核)の…
in Italian nucleare…
in Chinese (Traditional) 能源, 核能的, 使用核能的…
in Russian ядерный…
in Turkish nükleer, atom çekirdeğinin merkezine ilişkin…
in Chinese (Simplified) 能源, 核能的, 使用核能的…
in Polish jądrowy, nuklearny…
(Definition of nuclear from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of nuclear?
Add Cambridge dictionaries to your browser to your website

Definitions of “nuclear” in other dictionaries

Word of the Day

make believe

believing or imagining things that appear to be attractive or exciting, but are not real

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More