1. The tendency for a visual object to be perceived as having the same brightness under widely different conditions of illumination

Type of: constancy, perceptual constancy

• unrebuked
• unreceptive
• unreciprocated
• unrecognisable
• unrecognisably
• unrecognised
• unrecognizable
• unrecognizably
• unrecognized
• unreconcilable
• unreconciled
• unreconstructed
• unrecorded
• unrecoverable
• unredeemable
• unredeemed
• unreduced
• unreel
• unrefined
• unreflected
• unreflective
• unreformable
• unreformed
• unrefreshed
• unregenerate