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单词 radicle
释义

WordReference Random House Unabridged Dictionary of American English © 2024
rad•i•cle  (rad′i kəl),USA pronunciation n. 
  1. Botany
    • Botanythe lower part of the axis of an embryo;
      the primary root. See diag. under plumule. 
    • Botanya rudimentary root;
      radicel or rootlet.
  2. Chemistry(formerly) radical (def. 12).
  3. [Anat.]a small rootlike part or structure, as the beginning of a nerve or vein.
  • Latin rādīcula small root, equivalent. to rādīc- (stem of rādīx) root1 + -ula -ule
  • 1665–75

Collins Concise English Dictionary © HarperCollins Publishers::
radicle /ˈrædɪkəl/ n
  1. part of the embryo of seed-bearing plants that develops into the main root
  2. a very small root or rootlike part
  3. any bodily structure resembling a rootlet, esp one of the smallest branches of a vein or nerve
  4. a variant spelling of radical
Etymology: 18th Century: from Latin rādīcula a little root, from rādīx root
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更新时间：2025/7/31 12:46:08