- tetrad as a noun:
- 1
tetrad
noun
1 tetrad
The cardinal number that is the sum of three and one.
synonyms: 4, four, foursome, IV, Little Joe, quadruplet, quartet, quatern, quaternary, quaternion ... show more.
Roget 95: quaternity†, four, tetrad, quartet, quaternion, square, quarter. [planar form with four sides] tetract†, tetragon, quadrangle, rectangle. [three dimensional object with four surfaces] tetrahedron. ... show more
Dutch: quaternion, vier, vijf
Polish: czwórka
adjective
Roget 95: four; quaternary, quaternal†; quadratic; quartile; tetract†, tetractic†, tetractinal†; tetrad, tetragonal; square, quadrate.
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