Breadcrumb Home > Dictionary > Index T tobacco mosaic: Meaning and Definition of Find definitions for: tobac'co mosa"ic Pronunciation: [key] — Plant Pathol. Plant Pathol. a disease of the nightshade family of plants, particularly tobacco and tomato, caused by the tobacco mosaic virus and characterized by mottled leaves and yellowed, necrotic plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tobacco hornworm tobacco mosaic virus TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: pellucid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language