also  tri*chlor*ace*tic acid  n :  a strong vesicant pungent acid C₂Cl₃HO₂ made usu. by chlorinating acetic acid or by oxidizing chloral and used in medicine as a caustic and astringent - compare MONOCHLOROACETIC ACID  .
 
   
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2004.