Quantum Definition
kwŏntəm
quanta
noun
Quantity, or amount.
Webster's New World
This amount of energy regarded as a unit.
American Heritage
In the quantum theory, a (or the) fixed, elemental unit, as of energy, angular momentum, etc.
Webster's New World
A specified quantity; portion.
Webster's New World
Something that can be counted or measured.
American Heritage
adjective
Relating to or based upon quantum theory.
American Heritage
(informal) Of a change, significant.
Wiktionary
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