Quick answer
Isaiah is a boy name with Hebrew roots meaning "Yahweh is salvation".
Pronunciation: American English /aɪ.ˈzeɪ.ə/; British English /aɪ.ˈzaɪ.ə/.
Meaning and history
This name comes from the Hebrew name יְשַׁעְיָהוּ (Yeshaʿyahu) meaning " Yahweh is salvation", from the roots יָשַׁע ( yashaʿ ) meaning "to save" and יָהּ ( yah ) referring to the Hebrew God. Isaiah is one of the four major prophets of the Old Testament, supposedly the author of the Book of Isaiah. He was from Jerusalem and probably lived in the 8th century BC, at a time when Assyria threatened the Kingdom of Judah. As an English Christian name, Isaiah was first used after the Protestant Reformation.
Notes and context
Usage: english, biblical | Ancient Hebrew: יְשַׁעְיָהוּ