all-or-none

adjective
\ ˌȯl-ər-ˈnən How to pronounce all-or-none (audio) \

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

1656, in the meaning defined above

Keep scrolling for more

Learn More about all-or-none

Time Traveler for all-or-none

Time Traveler

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

See more words from the same year

Statistics for 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 24 Oct. 2020.

Keep scrolling for more

More Definitions for all-or-none

all-or-none

adjective
\ ˌȯ-lər-ˈnən How to pronounce all-or-none (audio) \

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

More from Merriam-Webster on all-or-none

Nglish: Translation of all-or-none for Spanish Speakers

Comments on all-or-none

What made you want to look up all-or-none? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!