THE FULL ARTICLE — from the International Standard Bible Encyclopedia

The International Standard Bible Encyclopedia (1915), general editor James Orr — public domain, printed whole.

tau ("t", "th"): The 22nd letter of the Hebrew alphabet; transliterated in this Encyclopedia with the daghesh as "t", and as "th" without. It came also to be used for the number 400. For name, etc., see ALPHABET.

See also FOREHEAD; MARK.