masc. proper name, name of a biblical prophet and of the book credited to him, from Hebrew Yesha'yah, abbreviated form of Yesha'yahu, literally "salvation of the Lord," from yesha, yeshua "salvation, deliverance." Related: Isaian
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Definitions of Isaiah from WordNet
Isaiah (n.)
(Old Testament) the first of the major Hebrew prophets (8th century BC);
Isaiah (n.)
an Old Testament book consisting of Isaiah's prophecies;
