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单词 triadic
释义

WordReference Random House Learner's Dictionary of American English © 2024
tri•ad /ˈtraɪæd, -əd/USA pronunciation   n. [countable]
  1. a group of three.
tri•ad•ic, adj. 

WordReference Random House Unabridged Dictionary of American English © 2024
tri•ad  (trīad, -əd),USA pronunciation n. 
  1. a group of three, esp. of three closely related persons or things.
  2. [Chem.]
    • an element, atom, or group having a valence of three. Cf. monad (def. 2), dyad (def. 3).
    • a group of three closely related compounds or elements, as isomers or halides.
  3. [Music.]a chord of three tones, esp. one consisting of a given tone with its major or minor third and its perfect, augmented, or diminished fifth.
  4. Military([cap.]) the three categories of strategic-nuclear-weapons delivery systems: bombers, land-based missiles, and missile-firing submarines.
  • Greek triás See tri-, -ad1
  • Latin triad- (stem of trias)
  • 1540–50
tri•ad ic, adj. 
tri ad•ism, n. 

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更新时间:2025/7/23 10:02:52