tetractys

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English[edit]

English Wikipedia has an article on:
Wikipedia

Etymology[edit]

Borrowed from Ancient Greek τετρακτύς (tetraktús).

Noun[edit]

tetractys

  1. A triangular figure consisting of ten points arranged in four rows, representing the fourth triangular number and having mystical significance to the Pythagoreans.
    • 2009 July 2, Cintra Wilson, “Riches at Rainbow’s End”, in New York Times[1]:
      ON the subway home, I noticed that the tattoo-esque logo for Solange includes a honeybee sitting in the middle of what looked like an early design by the 17th-century mystic Jakob Böhme: a flaming tetractys.

Further reading[edit]