CADHE tsä thā' (ץ, final ץ). Eighteenth letter of the Heb. alphabet; used as the numeral ninety in post-Biblical Heb. Cadhe (KJV Tzaddi; ASV Tsadhe; JPS Tzade; LXX σαδη,) heads vv. 137-144 of Psalm 119 and begins each v. in Heb.