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Meaning of tobacco mosaic

tobac'co mosa"ic

Pronunciation: [key]
— Plant Pathol. Plant Pathol.
  1. 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.