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Adjective: trigonal  trI'gow-n(u)l [N. Amer], tri-gu-n(u)l [Brit]
  1. Having threefold symmetry
    "In a trigonal bipyramid, two trigonal pyramids share a common base"
    - rhombohedral

See also: symmetric, symmetrical

Encyclopedia: Trigonal

Nearest

trigger-happy
triggerman
Trigla lucerna
Triglidae
Triglinae
Triglochin
Triglochin maritima
triglyceride
triglyph
trigon
trigonal
Trigonella
Trigonella foenumgraecum
Trigonella ornithopodioides
trigonometric
trigonometric function
trigonometrical
trigonometrician
trigonometry
trigonum cerebrale
trigram