tetragram

IPA: tɛtrʌgræm

A group of four letters.
In the Taixuanjing, a sequence of four lines, each of which may be unbroken, broken once, or broken twice. Each sequence is interpreted as an element of the sets of solid lines (⚊ for Heaven), once-broken lines (⚋ for Earth) and twice-broken lines (𝌀 for Man) formed by combinations of four monograms (two digrams or bigrams, in other words) in the divination of the Taixuanjing.

Examples of "tetragram" in Sentences

My space is up, and I never got to write about abecedarian, mussitate, tetragram or picayune (also from Lindsey).
It was shaped like a little house surmounted by a cross and encircled, under the pediment, by the dial-like figure of the tetragram.
But, some of those challenges can be overcome if you're rigorous about it, if you take the time to think about the cards in the right way, if you present the thing other than a tetragram, it's just kind of part of the method, but you can overcome those challenges.