Easton's Bible Dictionary (1897)
Rock of the Almighty, the father of Shelumiel, who was chief of the tribe of Simeon when Israel was encamped at Sinai (Num. 1:6; 2:12).
Smith's Bible Dictionary (1863)
(my rock is the Almighty), father of Shelumiel, the chief of the tribe of Simeon at the time of the exodus.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ZU'RISHAD'DAI (my rock is the Almighty), the father of the chief of Simeon at the time of the Exodus. Num 1:6; Num 2:12; Acts 7:36, John 7:41; Isa 10:19.
Hitchcock's Bible Names (1869)
the Almighty is my rock and strength