Bible dictionaries
Onan
What Bible dictionaries say about “Onan”, one article after the other.
Easton’s Bible Dictionary & Webster’s 1828 Dictionary
Onan - (Easton's Bible Dictionary)
Strong, the second son of Judah (Gen. 38:4-10; comp. Deut. 25:5; Matt. 22:24). He died before the going down of Jacob and his family into Egypt.
Matthew George Easton, Easton’s Bible Dictionary; Noah Webster, American Dictionary of the English Language (1828)
The article in Easton + Webster 1828International Standard Bible Encyclopedia (ISBE 1915)
o'-nan ('onan, "vigorous"; compare ONAM, a "son" of Judah (Ge 38:4,8-10; 46:12; Nu 26:19; 1Ch 2:3); "The story of the untimely death of Er and Onan implies that two of the ancient clans of Judah early disappeared" (Curtis, Chron, 84). See Skinner, Gen, 452, where it is pointed out that in Ge 38:11 Judah plainly attributes the death of his sons in some way to Tamar herself. The name is allied to Onam.
International Standard Bible Encyclopedia — James Orr, general editor and contributors; CrossWire SWORD module ISBE 2.2
The article in ISBE 1915Smith’s Bible Dictionary
William Smith; revised by F. N. Peloubet and M. A. Peloubet; CrossWire SWORD module Smith 1.3
The article in Smith