Thesaurus.com
Dictionary.com
Showing results for nuclear. Search instead for nucleopro.
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.

However, as nuclear fusion attracts more public and private capital, Bechtel expects researchers to overcome these problems and make fusion a commercially viable source of energy by 2050.

From The Wall Street Journal • Apr. 6, 2026

Bushehr is Iran's only operational nuclear power plant and was completed with Russia's help.

From BBC • Apr. 4, 2026

Bushehr nuclear power plant, Iran's only operational civilian nuclear facility, was built by Russia and officially handed over in September 2013, after decades of twists, turns and delays linked to Iran's turbulent history.

From Barron's • Apr. 4, 2026

Cliff Kuang and Robert Fabricant open their book User Friendly with the cautionary tale of the Three Mile Island nuclear disaster.

From Slate • Apr. 4, 2026

While uranium 235 fissions easily, nuclear fuel is not pure—it is made mostly of uranium 238, which does not fission.

From "Meltdown" by Deirdre Langeland

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