teth ()ט: The 9th letter of the Hebrew alphabet; transliterated in this Encyclopedia as ṭ (a more intense t). It came also to be used for the number 9; and with wāw ()ו for 15, with zāyin ()ז 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.