all-or-none
Adjective Satellite
Meaning
occurring completely or not occurring at all
Source: WordNetSynonyms
Related terms
Examples
If the voltage changes by a large enough amount, an all-or-none electrochemical pulse called an action potential is generated, which travels rapidly along the cell's axon, and activates synaptic connections with other cells when it arrives.
In R. Eckmiller, G. Hartmann, & G. Hauske (Eds.) Parallel processing in neural systems, Elsevier, pp. 91–94 ISBN 0444883908 All-or-none principle The conduction of nerve impulses is an example of an all-or-none response.
The word "quantum" therefore refers to an "all-or-none reaction", where transitional forms are particularly unstable, and perished rapidly and completely.