Retrovaccination
Pronunciation : Re`tro*vac`ci*na"tion
Part of Speech : n.
Definition : Defn: The inoculation of a cow with human vaccine virus.
(Med.)
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder