English

Noun

heptagram ‎(plural heptagrams)

1. Either of two regular seven-pointed stars, drawn with the construction lines retained; a heptangle.
   • 1890, Mary Everest Boole, Logic Taught by Love, Alfred Mudge & Son:

     page 15: The exercise may be varied by tracing the Heptagram, i. e., passing from one point to another of a regular Heptagon in this order — 1, 4, 7, 3, 6, 2, 5, 1.

     page 81: If the hand is stiff, it may be loosened and trained into tune with Nature's formative processes by the practice of drawing the Pentagram and Heptagram.

   • 1995, Carl G. Liungman, Thought Signs: The Semiotics of Symbols: Western Idiograms, IOS Press, ISBN 90-5199-197-5, page 347:

     It was with the adoption and widespread use of the seven-day week throughout the Hellenistic world of mixed cultures that this heptagram [the weekday heptagram] was created.

   • 2009, John Barnes, Gems of Geometry, Springer, ISBN 978-3-642-05091-6, page 27:

     Note that there are two different heptagrams, one goes around twice and the other thrice; moreover, the configuration at the core of the 3-heptagram is in fact a 2-heptagram and the figure at the core of that is an ordinary heptagon.

2. (rare) A heptagon.

Related terms

• (star shape): hexagram (6-pointed), octogram (8-pointed)