Letters that make jnd
j, d, n are letters that make 'jnd'
1 possible definitions for 'jnd'
Under this definition, jnd is a noun and has the following properties:
just-noticeable difference has the same meaning as jnd
'jnd' can be a type of difference threshold, differential threshold, difference limen, differential limen.
'jnd' can be a category of psychophysics.