or chiefly Brit  syn*aes*the*sia  n :  a concomitant sensation : esp  :  a subjective sensation or image of a sense (as of color) other than the one (as of sound) being stimulated syn*es*thet*ic or chiefly Brit  syn*aes*thet*ic  adj 
 
 
 
Similar sounding terms:  cen·es·the·sia  synaesthesia 
 
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