tetragon

From tetra- +‎ -gon.

• (US, Canada) IPA^(key): /ˈtɛ.tɹə.ɡɒn/
• (UK) IPA^(key): /ˈtɛ.tɹə.ɡən/

  • Audio (Southern England):

    (file)

• Hyphenation: te‧tra‧gon

tetragon (plural tetragons)

1. (geometry, rare) Quadrilateral.
2. An aspect of two planets with regard to the Earth when they are distant from each other ninety degrees, or a quarter-circle.
   • a. 1626, Bishop Andrewes, Sermon:

     In the horoscope of Christ's nativity. […] Whether a trigon or no, this tetragon I am sure there was.

• quadrangle; see also Thesaurus:quadrilateral
• quadrilateral

• tetragonal
• Tetragonopterus

• on target

Borrowed from French tétragone.

tetragon n (plural tetragoane)

1. tetragon