Teth

teth (T):

The 9th letter of the Hebrew alphabet; transliterated in this Encyclopedia as "T" (a more intense "t"). It came also to be used for the number 9; and with waw ("w") for 15, with zayin ("z") for 16 (i.e. 9 plus 6 and 9 plus 7) to avoid forming regular series with the abbreviation for Yahweh. For name, etc., see ALPHABET.