dentistry a vegetable dye, administered as a liquid or in tablet form (disclosing tablet), that stains plaque, making it readily apparent on the teeth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
A dye used in dentistry as a diagnostic aid, applied to the teeth to reveal the presence of dental plaque.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.