Breadcrumb Home > Dictionary > Index O oak wilt: Meaning and Definition of Find definitions for: oak' wilt" Pronunciation: [key] — Plant Pathol. Plant Pathol. a disease of oaks, characterized by wilting and discoloration of the leaves and defoliation, usually starting at and spreading from the top of the tree and the ends of the branches, caused by a fungus, Chalara quercina. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oak wax scale O and O TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: pentimento Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language