Tetragram or tetragraph generally refers to any a group of four letters, but more specifically may refer to: *

Tetragraph A tetragraph (from the el, τετρα-, ''tetra-'', "four" and γράφω, ''gráphō'', "write") is a sequence of four letters used to represent a single sound (phoneme), or a combination of sounds, that do not necessarily correspond to the indi ...

, in orthography, referring to a sequence of four letters that represent sounds not necessarily corresponding to those of the individual letters *

Tetragrammaton The Tetragrammaton (; ), or Tetragram, is the four-letter Hebrew theonym (transliterated as YHWH), the name of God in the Hebrew Bible. The four letters, written and read from right to left (in Hebrew), are ''yodh'', '' he'', '' waw'', and ...

, a Hebrew name for God written as YHWH *

Complete quadrilateral In mathematics, specifically in incidence geometry and especially in projective geometry, a complete quadrangle is a system of geometric objects consisting of any four points in a plane, no three of which are on a common line, and of the six l ...

, a geometric system of four lines and their six points of intersection * Tetragraph (from Chinese zh, c=方塊字, p=fāngkuàizì, labels=no), referring to

Chinese characters Chinese characters () are logograms developed for the writing of Chinese. In addition, they have been adapted to write other East Asian languages, and remain a key component of the Japanese writing system where they are known as ''kanji ...

written on squared graph paper * A symbol with four lines in

Taixuanjing The text ''Tài Xuán Jīng'' ("Canon of Supreme Mystery", ) is a guide for divination composed by the Confucian writer Yang Xiong (53 BCE – 18 CE). The first draft of this work was completed in 2 BCE (in the decade before the fall of the West ...

* A degenerate star polygon, usually represented as a compound of two digons

See also