1. physiology sensation felt elsewhere in body: the feeling of sensation in one part of the body when another part is stimulated
2. psychology stimulation of one sense alongside another: the evocation of one kind of sense impression when another sense is stimulated, e.g. the sensation of color when a sound is heard
3. literature rhetorical device: in literature, the description of one kind of sense perception using words that describe another kind of sense perception, as in the phrase "shining metallic words" ( literary )
[Late 19th century. < modern Latin < syn- (< Greek sun "together") + stem of Greek aisthēsis "sensation," after anesthesia]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. http://encarta.msn.com/dictionary_/synesthesia.html (accessed: January 16, 2009).
Bob suffered from a rare form of synesthesia; seeing a color would evoke the sensation of taste. His favorite flavored color, fuscia, was popular this season. This led to Bob losing his job; licking peoples' sweaters was not approved corporate behavior.