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.

In the second half of the 20th Century, it was the race to develop nuclear arms that occupied some of the finest minds in the US and the Soviet Union.

From BBC • Apr. 7, 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

It said nuclear power plant sites and nearby areas "must never be attacked" and called for "maximum military restraint" to avoid a nuclear accident.

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

“Not unless it was nuclear, which it wasn’t.”

From "Glitch" by Laura Martin

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