Breadcrumb Home > Dictionary > Index A aster yellows: Meaning and Definition of Find definitions for: as'ter yel'lows Pronunciation: [key] — Plant Pathol. Plant Pathol. a dwarfing and yellowing of asters and various other plants, caused by a mycoplasma transmitted by a leafhopper. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Asteropaeus asthenia TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: felicitous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language