From BiblePortal Wikipedia

Morrish Bible Dictionary [1]

Son of Adam and Eve, born after the death of Abel, and father of Enos. His name signifies 'appointed': God thus continued the line of Abel, whom Cain slew, through the appointment of Seth. Hence, in  Genesis 4:25,26 it is said in connection with Seth, "Then began men to call upon the name of the Lord." This is immediately followed by "This is the book of the generations of Adam," giving the lineage through Seth and his descendants, and making no mention of Cain and his descendants. From Seth the genealogy is traced to Noah, and the flood swept away all else.   Genesis 5:3-8;  Luke 3:38 . He is called SHETHin  1 Chronicles 1:1 .

Fausset's Bible Dictionary [2]

 Genesis 4:25;  Genesis 5:3;  1 Chronicles 1:1. Seth means "foundation," being "appointed" in Abel's place as ancestor of the promised Seed. Father of Enos ("frailty"); a name embodying his sense of man's weakness, the opposite of the Cainites' pride. This sense of frailty led the Sethites to calling on God in His covenant relation to His believing people; thus began the church as a people separated from the world, and its service of prayer and praise. While the Cainites, by erecting a city and inventing worldly arts, laid the foundation of the world kingdom, the Sethites, by joint invocation of Jehovah's name i.e. His self manifestation towards man, founded the kingdom of God.

Watson's Biblical & Theological Dictionary [3]

son of Adam and of Eve, was born A.M. 130,  Genesis 5:3;  Genesis 5:6;  Genesis 5:10-11 . Seth, at the age of one hundred and five years, begat Enos, A.M. 235. He lived after this eight hundred and seven years, in all nine hundred and twelve years, and died A.M. 1042. Seth was the chief of "the children of God," as the Scripture calls them,  Genesis 6:2 that is, those who before the flood preserved true religion and piety in the world, while the descendants of Cain gave themselves up to wickedness. The invention of letters and writing is by the rabbins ascribed to this patriarch.

Hastings' Dictionary of the Bible [4]

SETH . The third son of Adam,   Genesis 4:25 (J [Note: Jahwist.] )   Genesis 5:3 (P [Note: Priestly Narrative.] ),   1 Chronicles 1:1 ,   Luke 3:38 . In the first of these passages J [Note: Jahwist.] assigns a characteristic etymology for the name, Eve being made to say, ‘God hath set ( shâth ) for me another seed instead of Abel,’ for which reason she called him Shçth ( i.e. ‘setting’ or ‘slip’). In Sir 49:16 Seth is coupled with Shem as ‘glorified among men.’

Smith's Bible Dictionary [5]

Seth. (Compensation).  Genesis 4:25;  Genesis 6:3;  1 Chronicles 1:1. The third son of Adam, and father of Enos. (B.C. 3870). Adam handed down to Seth, and his descendants, the promise of mercy, faith in which became the distinction of God's children.  Genesis 4:26.

American Tract Society Bible Dictionary [6]

The first son of Adam after the death of Abel,  Genesis 4:25,26;  5:3,6,8 , and ancestor of the line of godly patriarchs.

Hawker's Poor Man's Concordance And Dictionary [7]

Son of Adam, and father of Enos. ( Genesis 5:3) His name is taken from Sheith, to put.

Holman Bible Dictionary [8]

 Genesis 4:25 Genesis 5:3 Luke 3:38

Hastings' Dictionary of the New Testament [9]

SETH. —The patriarch, mentioned as a link in our Lord’s genealogy ( Luke 3:38).

Easton's Bible Dictionary [10]

 Genesis 4:25 5:3

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [11]

(Heb. Sheth, שֵׁת , i.e. Compensation; Sept. and New Test. Σήθ ; Josephus, Σῆθος [ Ant. 1, 2, 3]; A.V. "Sheth" in  1 Chronicles 1:1;  Numbers 24:7), the third son of Adam (born B.C. 4042), and the father of Enos (when 105 years old); he died at the age of 912 ( Genesis 4:25-26;  Genesis 5:3-8;  1 Chronicles 1:1;  Luke 3:38). The signification of his name (given in  Genesis 4:25) is "appointed" or "put" in the place of the murdered Abel, and Delitzsch speaks of him as the second Abel; but Ewald ( Gesch. 1, 353) thinks that another signification, which he prefers, is indicated in the text, viz. "seedling," or "germ." The phrase "children of Sheth" ( Numbers 24:17) has been understood as equivalent to all mankind, or as denoting the tribe of some unknown Moabitish chieftain; but later critics, among whom are Rosenm Ü ller and Gesenius (Thesaur. p. 346), bearing in mind the parallel passage ( Jeremiah 48:45), render the phrase "children of noise, tumultuous ones," i.e. hostile armies. (See Sheth).

In the 4th century there existed in Egypt a sect calling themselves Sethians, who are classed by Neander (Ch. Hist., 2, 115, ed. Bohn) among those Gnostic sects which, in opposing Judaism, approximated to paganism. (See. also Tillemont, Memoires, 2, 318.) Irenaeus (1, 30; comp. Massuet, Dissert. 1, 3, 14) and Theodoret (Hoeret. Fab. 14, 306), without distinguishing between them. and the Ophites, or worshippers of the serpent, say that in their system Seth was regarded as a divine effluence or virtue. Epiphanius, who devotes a chapter to them (Adv. Hoer. 1, 3, 39), says that they identified Seth with our Lord. See Quandt, De Christo in Nomine Sethi Adumbrato (Regiom. 1726).

Kitto's Popular Cyclopedia of Biblial Literature [12]

Seth (compensation), the third son of Adam, to whom Eve gave this name in consequence of regarding him as sent to replace Abel, whom Cain had slain (; , sq.).