• synonyms


noun Ophthalmology.
  1. a defect of vision in which objects appear to be larger than their actual size.
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Also ma·cro·pi·a [muh-kroh-pee-uh] /məˈkroʊ pi ə/, mac·rop·sy [mak-rop-see] /ˈmæk rɒp si/.
Compare micropsia.

Origin of macropsia

From New Latin, dating back to 1885–90; see origin at macr(o)-, -opsia
Also called megalopsia, megalopia.


noun Ophthalmology.
  1. macropsia.
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Also meg·a·lop·i·a [meg-uh-lop-ee-uh] /ˌmɛg əˈlɒp i ə/.

Origin of megalopsia

First recorded in 1885–90; megal- + -opsia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for megalopia


  1. the condition of seeing everything in the field of view as larger than it really is, which can occur in diseases of the retina or in some brain disorders
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012