quantum

3 entries found for quantum.
To select an entry, click on it. (Click 'Go' if nothing happens.)

quantum quantum mechanics quantum theory

Main Entry: quan·tum
Pronunciation: kwänt-m
Function: noun
Inflected Form(s): plural quan·ta /kwänt-/
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