JND

J8N1D2

noun

Just-noticeable difference, the amount by which something must be changed in order for it to be detectable at least 50% of the time.

“Aleah's nosejob was not dramatic. It was more like a JND, around half her friends noticed it and the other half did not.”

Similar
just-noticeable difference
UncommonScrabble 11
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounJND (plural JNDs)

plural JNDs

  1. Just-noticeable difference, the amount by which something must be changed in order for it to be detectable at least 50% of the time.

    Aleah's nosejob was not dramatic. It was more like a JND, around half her friends noticed it and the other half did not.

    1 more example

    The three laws of thresholds Weber's law states that, for a JND to be noticed, a constant ratio (relationship) exists between the intensity of a stimulus and the additional intensity required for a comparison to be made between the stimuli.

    2009, Lionel Nicholas, Introduction to Psychology, page 75

Synonyms & antonyms

noun(psychophysics) the difference between two stimuli that (under properly controlled experimental conditions) is detected as often as it is undetected

Similar
just-noticeable difference
Broader
difference thresholddifferential thresholddifference limen

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

JND. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/JND

MLA

“JND.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/JND. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “JND,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/JND.

Source: JND on Wiktionary, CC BY-SA 4.0.