n 1  :  a photograph in which the object is either unmagnified or slightly magnified up to a limit of magnification often of about 10 diameters  2  :  a photomicrograph of very low magnification .
 
 
 
Similar sounding terms:  pho·to·mac·rog·ra·phy  pho·to·mi·cro·graph  pho·to·mi·crog·ra·phy 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2004.