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单词 trigonal
释义

WordReference Random House Unabridged Dictionary of American English © 2024
trig•o•nal  (trigə nl),USA pronunciation adj. 
  1. of, pertaining to, or shaped like a triangle;
    having three angles;
    triangular.
  2. [Crystall.]having threefold symmetry.
  • trigon + -al1 1560–70
trig o•nal•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::
trigonal /ˈtrɪɡənəl/ adj
  1. another word for triangular

  2. Also: rhombohedral relating or belonging to the crystal system characterized by three equal axes that are equally inclined and not perpendicular to each other
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