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Added 9 October 2026

quantum

/ˈkwɒntəm/ noun

Latin root: quantum Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about quantum at Wordnik → Where our words come from →

A discrete amount of something that is analogous to the quantities in quantum theory.
(physics) the smallest discrete quantity of some physical property that a system can possess (according to quantum theory).

Origin

From Late Latin quantum, noun use of neuter form of Latin quantus (“how much”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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