Easton's Bible Dictionary (1897)
Appointed; a substitute, the third son of Adam and Eve (Gen. 4:25; 5:3).
Smith's Bible Dictionary (1863)
(compensation), (Genesis 4:25; 6:3; 1 Chronicles 1:1) the third son of Adam, and father of Enos. ) Adam handed down to Seth and his descendants the promise of mercy, faith in which became the distinction of God’s children.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SETH (compensation), son of Adam and Eve, was born when Adam was one hundred and thirty years old, and lived nine hundred and twelve years. Gen 5:3 Tradition ascribes to Seth the invention of letters.
Hitchcock's Bible Names (1869)
put; who puts; fixed