As a noun hexagram
is a hollow six-pointed star formed by overlapping two equilateral triangles; the star of david.
As an adjective hexagrammatic is
(rare) pertaining to hexagrams as a means of divination.
Other Comparisons: What's the difference?
* hexagramme (rare)
A hollow six-pointed star formed by overlapping two equilateral triangles; the Star of David.
Any of the 64 sets of solid and broken lines used for divination in the I Ching.
A large silver coin minted during the Byzantine Empire.
* (six-pointed star): Magen David, Star of David
(rare) Pertaining to hexagrams as a means of divination.