Search Result for "size constancy":
Wordnet 3.0

NOUN (1)

1. the tendency to perceive the veridical size of a familiar object despite differences in their distance (and consequent differences in the size of the pattern projected on the retina of the eye); 



WordNet (r) 3.0 (2006):

size constancy
    n 1: the tendency to perceive the veridical size of a familiar
         object despite differences in their distance (and
         consequent differences in the size of the pattern projected
         on the retina of the eye)