Easton's Bible Dictionary (1897)
The Omnipotent, the name of God in frequent use in the Hebrew Scriptures, generally translated “the Almighty.”
Smith's Bible Dictionary (1863)
” By the name or in the character of El-Shaddai God was known to the patriarchs, (Genesis 17:1; 28:3; 43:14; 48:3; 40:25) before the name Jehovah, in its full significance, was revealed.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SHAD'DAI (the mighty), the name for God in common use, along with "El," before Jehovah was revealed.