Smith's Bible Dictionary (1863)
(whom Jehovah has made just). (Ezra 3:2,8; 5:2; 10:18; Nehemiah 12:26) The contracted form of Jehozadak.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
JOZ'ADAK (whom Jehovah makes just), a contraction of Jehozadak; used in Ezr 3:2, 1 Kgs 15:8; Song of Solomon 5:2; Neh 10:18; Neh 12:26.