Definition of macropsia in US English:

macropsia

noun

Medicine
  • Perception of objects as larger than their actual size (as a symptom of ophthalmic or neurological disease).

Origin

Late 19th century; earliest use found in John S. Billings (1838–1913). From macro- + -opsia.

Pronunciation

macropsia

/məˈkrɒpsɪə/