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Showing results for nuclear. Search instead for nonnuclea.
Definitions

nuclear

[noo-klee-er, nyoo-, -kyuh-ler] / ˈnu kli ər, ˈnyu-, -kyə lər /
ADJECTIVE
central
Synonyms
STRONGEST
basic essential fundamental important key paramount pivotal significant
STRONG
cardinal center chief dominant interior intermediate leading master mean median middle midway primary prime radical ruling salient umbilical
WEAK
axial centric centroidal equidistant focal foremost inmost inner mid middlemost midmost omphalic outstanding overriding predominant
Antonyms
STRONGEST
additional auxiliary extra inessential insignificant minor nonessential secondary trivial unimportant unsubstantial
STRONG
exterior extreme inferior outer outside subordinate
WEAK
peripheral
ADJECTIVE
inner
Synonyms
WEAK
close constitutional essential familiar focal inherent innermore inside interior internal intestinal intimate intrinsic inward
Antonyms
WEAK
exterior external outer outside physical
ADJECTIVE
organic
Synonyms
STRONGEST
biological
STRONG
anatomical constitutional essential fundamental integral living necessary original primary prime primitive principal
WEAK
amoebic animate basal biotic cellular elemental inherent innate live plasmic structural vital
Antonyms
STRONG
accessory auxiliary extra inessential minor secondary trivial unimportant unnecessary
WEAK
inorganic man-made unnatural

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 25 years, Mike Bechtel thinks we will have a new source of clean, abundant energy: nuclear fusion.

From The Wall Street Journal • Apr. 6, 2026

Highly enriched uranium can be used for nuclear weapons; low-enriched uranium can fuel nuclear power plants.

From The Wall Street Journal • Apr. 6, 2026

But Germany's government persuaded Siemens to withdraw over concerns about nuclear proliferation.

From Barron's • Apr. 4, 2026

The head of Russia's state nuclear corporation, Rosatom, Alexei Likhachev, said on Saturday that the evacuation of 198 people remaining in the plant had started that morning.

From BBC • Apr. 4, 2026

In the process of nuclear fusion, the nuclei of small atoms combine to form larger ones.

From "Fallout: Spies, Superbombs, and the Ultimate Cold War Showdown" by Steve Sheinkin

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.