单词 | dutch elm disease |
释义 | Dutch elm diseasenouna disease of elms characterized by wilting, yellowing, and falling of the leaves and caused by a fungus, Ceratostomella ulmi, transmitted by bark beetles. Origin of Dutch elm diseaseFirst recorded in 1920–25 Words nearby Dutch elm diseaseDutch disease, Dutch doll, Dutch door, Dutch East Indies, Dutch elm, Dutch elm disease, Dutch gold, Dutch Guiana, Dutch guinea pig, Dutch Harbor, Dutch hoe Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for Dutch elm diseaseDutch elm disease nouna disease of elm trees caused by the fungus Ceratocystis ulmi and characterized by withering of the foliage and stems and eventual death of the parts of the tree above ground Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for Dutch elm diseaseDutch elm disease [ dŭch ] A disease of elm trees caused by the fungus Ceratocystis ulmi, spread by the European elm bark beetle Scolytus multistriatus and by the contact of the roots of healthy elms with those of infected trees. It produces brown streaks in the wood and results in the eventual death of the tree. No cure has been discovered, but prevention methods include the injection of insecticide into healthy trees and the destruction of all elms in infected areas. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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