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单词 hydrilla
释义

WordReference Random House Unabridged Dictionary of American English © 2024
hy•dril•la  (hī drilə),USA pronunciation n. 
  1. Plant Biologya submerged aquatic plant, Hydrilla verticillata, native to the Old World, that has become a pest weed in U.S. lakes and waterways.
  • Neo-Latin (1814), the genus name, equivalent. to Latin hydr(a) hydra + -illa diminutive suffix

Collins Concise English Dictionary © HarperCollins Publishers::
hydrilla /haɪˈdrɪlə/ n
  1. any aquatic plant of the Eurasian genus Hydrilla, growing underwater and forming large masses: used as an oxygenator in aquaria and pools. It was introduced in the S US where it has become a serious problem, choking fish and hindering navigation
Etymology: 20th Century: New Latin, probably from hydra
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