diphtheria toxoid, tetanus toxoid, pertussis vaccine
a vaccine available in three forms: diphtheria and tetanus toxoids plus pertussis vaccine (DTP); tetanus and diphtheria toxoids, adult type (Td); and tetanus toxoid (T); used for active immunization against diphtheria, tetanus, and whooping cough. DTP has been replaced by an acellular DTP (aDTP) in the U.S.
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.