tetrad
/ˈtɛtrad/
Similar spelling
Description
tetrad
set of four notes in music theory. When these four notes form a tertian chord they are more specifically called a seventh chord, after the diatonic interval from the root of the chord to its fourth note (in root position close voicing)
tetrad
the four spores of a yeast, other Ascomycota or Chlamydomonas produced after meiosis
Tetrad
a set of four total lunar eclipses within two years
tetrad
4 pythagorean symbol (Kosmos) in the first four numbers symbolize the musica universalis and the Cosmos
tetrad
locally defined set of four linearly independent vector fields
tetrad
area 2 km x 2 km square (particular use in connection with the British Ordnance Survey national grid, and then refers to any of the 25 such squares which make up a standard hectad)
tetrad
set of four entities
Tetrad
UK musical group
English Phonetic Transcription
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