all-or-none

all-or-none (ôlr-nn)

adj.

Characterized by either a complete response or by a total lack of response or effect, as in neurological action above a threshold: "Nerve impulses follow the All or None Lawthat is, a nerve impulse generated by a weak stimulus is just as strong as one generated by a strong stimulus" (Fundamentals of Biology).

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all-or-none  (ôlr-nn)

Characterized by either a complete response or by a total lack of response or effect, depending on the strength of the stimulus. Neurons have an all-or-none response to impulse transmission and cannot be partially stimulated.

Thesaurus

Adj.

1.

all-or-none - occurring completely or not occurring at all all-or-nothing complete - having every necessary or normal part or component or step; "a complete meal"; "a complete wardrobe"; "a complete set of the Britannica"; "a complete set of china"; "a complete defeat"; "a complete accounting"