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1

quantum

play
noun quan·tum \ˈkwän-təm\

Simple Definition of quantum

  • physics : the smallest amount of many forms of energy (such as light)

Full Definition of quantum

plural quan·ta play \ˈkwän-tə\

  1. 1 a :  quantity, amount b :  portion, part c :  gross quantity :  bulk

  2. 2 a :  any of the very small increments or parcels into which many forms of energy are subdivided b :  any of the small subdivisions of a quantized physical magnitude (as magnetic moment)

Examples of quantum

  1. <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>



Origin of quantum

Latin, neuter of quantus how much


First Known Use: 1567


2

quantum

adjective quan·tum

Simple Definition of quantum

  • physics : of, relating to, or using the principles of quantum theory

Full Definition of quantum

  1. 1 :  large, significant <a quantum improvement>

  2. 2 :  of, relating to, or employing the principles of quantum mechanics <quantum physics>

1942

First Known Use of quantum

1942


Medical Dictionary

quantum

play
noun quan·tum \ˈkwänt-əm\

Medical Definition of quantum

plural quan·ta \ˈkwänt-ə\play

  1. 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. 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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