: marked either by entire or complete operation or effect or by none at all
all-or-none response of a nerve cell

Word History

First Known Use

1656, in the meaning defined above

Time Traveler
The first known use of all-or-none was in 1656

Dictionary Entries Near all-or-none

Cite this Entry

“All-or-none.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/all-or-none. Accessed 23 Mar. 2023.

Medical Definition

all-or-none

adjective
: marked either by complete operation or effect or by none at all
all-or-none response of a nerve cell

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