Dictionary

all–or–none

adjective \ˌl-ər-ˈnən\

Definition of ALL-OR-NONE

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

First Known Use of ALL-OR-NONE

1900

all–or–none

adjective \ˌ-lər-ˈnən\   (Medical Dictionary)

Medical Definition of ALL–OR–NONE

:  marked either by complete operation or effect or by none at all <all–or–none response of a nerve cell>

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