What does discriminable mean?
"Discriminable" is a formal adjective meaning capable of being distinguished — able to be perceived or measured as different from something else. It belongs chiefly to scientific and technical registers: psychologists speak of discriminable stimuli, sensory scientists of discriminable differences in taste, colour, or sound, and researchers of the just-discriminable threshold below which two things become perceptually identical. A pair of nearly identical paint swatches may be barely discriminable, while two clearly different tones are readily discriminable. The word derives from Latin roots meaning "to separate apart," the same source as "discriminate," but unlike that word it carries no association with unfair treatment; it concerns only the act of telling things apart. Though rare in casual speech, where "distinguishable" predominates, "discriminable" offers precision in contexts where detectability itself is the object of study, making it a valued term in perception research, acoustics, vision science, and experimental methodology.
adjectiveCapable of being distinguished or perceived as different from something else, typically by the senses or by measurement.
- Able to be distinguished or told apart, especially by the senses, perception, or measurement.
"The two shades of blue were barely discriminable to the naked eye."
"The two shades of blue were barely discriminable to the naked eye."
"Psychologists measured the smallest discriminable difference in the pitch of two tones."
In psychophysics labs, 'just discriminable differences' are literally the smallest changes a human can detect — this quiet little adjective is the vocabulary of the limits of perception.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of discriminable
"Discriminable" comes from Latin discriminare, meaning "to separate or distinguish," formed on discrimen, a dividing point or distinction, ultimately related to crimen (a decision or judgment). It entered English through the verb "discriminate," which was established by the early seventeenth century, with the adjectival form following later as part of the same family. Cognates sharing the Latin root include "discrimination," "discriminating," and "indiscriminate."
How discriminable is actually used
Primarily a technical and formal term, most at home in psychology, psychophysics, sensory science, and academic prose. It is uncommon in everyday conversation, where 'distinguishable' is the usual choice. It carries no connotation of unfair treatment — that sense belongs to its relative 'discriminatory'.
Easily confused with discriminable
'Discriminating' describes someone or something that shows good judgment or discernment, while 'discriminable' describes something that can be distinguished from something else.