plural quanta
ˈkwän-tə 
1
: large, significant
a quantum improvement
2
: of, relating to, or employing the principles of quantum mechanics
quantum physics
Examples of quantum in a Sentence
Noun
the sum of human knowledge is now so immense that even a highly educated person can hope to absorb only a tiny quantum of it
Recent Examples on the Web
Madhava Rao Kunchala, Forbes.com, 15 Apr. 2025
Physicists now widely study anyons for their potential in quantum computing.
—Shalma Wegsman, Quanta Magazine, 11 Apr. 2025
Dorit Dor, Forbes.com, 17 Apr. 2025
Quantum networks are the infrastructure that connect quantum devices.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 14 Apr. 2025
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Noun
However, organizations face significant challenges when integrating these technologies, ranging from data quality issues in AI systems to the high costs of quantum computing.
—Madhava Rao Kunchala, Forbes.com, 15 Apr. 2025
Physicists now widely study anyons for their potential in quantum computing.
—Shalma Wegsman, Quanta Magazine, 11 Apr. 2025
Adjective
Google’s 2019 Quantum Supremacy Milestone In October 2019, Google published its quantum supremacy claim in Nature.
—Dorit Dor, Forbes.com, 17 Apr. 2025
Quantum networks are the infrastructure that connect quantum devices.
—Kurt Knutsson, Cyberguy Report, FOXNews.com, 14 Apr. 2025
See All Example Sentences for quantum
Cite this Entry
“Quantum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum. Accessed 22 Apr. 2025.
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Medical Definition
quantum
noun
quan·tum
ˈkwänt-əm
plural quanta
ˈkwänt-ə
1
: one of the very small increments or parcels into which many forms of energy are subdivided
a molecule of rhodopsin in the human eye can cause a response to a single quantum of light
2
: one of the small molecular packets of a neurotransmitter (as acetylcholine) released into the synaptic cleft in the transmission of a nerve impulse across a synapse
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