Breadcrumb Home > Dictionary > Index V vaccination: Meaning and Definition of Find definitions for: vac•ci•na•tion Pronunciation: (vak"su-nā'shun), [key] — n. Med. the act or practice of vaccinating; inoculation with vaccine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vaccination (Thesaurus) vaccinate vaccinator TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census 50 Spookiest Halloween Quotes Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: factotum Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language