a discriminating mark
discriminating
/di-ˈskri-mə-ˌnā-tiŋ/
adjective
making a distinction : distinguishing
marked by discrimination:
discerning, judicious
verb
to mark or perceive the distinguishing or peculiar features of
distinguish, differentiate
to distinguish by discerning or exposing differences : to recognize or identify as separate and distinct; especially : to distinguish from another like object
Depth perception may be defined as the ability to appreciate or discriminate the third dimension …
discriminate hundreds of colors