vt 1  :  to cause discoloration of <smoking s teeth>   2  :  to color by processes affecting chemically or otherwise the material itself < bacteria with a fluorescent dye>  vi  :  to receive a stain
, n 1  :  a discolored spot or area (as on the skin or teeth) - see PORT-WINE STAIN   2  :  a preparation (as of dye or pigment) used in staining something : esp  :  a dye or mixture of dyes used in microscopy to make minute and transparent structures visible, to differentiate tissue elements, or to produce specific chemical reactions .
 
 
 
Similar sounding terms:  Cy·do·nia  cy·ton  se·ton  stone 
 
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