David, Root of
International Standard Bible Encyclopedia · James Orr and contributors
root (he rhiza Daueid, Re 5:5; 22:16): Root here means stock, family, descendant, hence, "the Root of David" is that which descended from David, not that from which David descended. Jesus Christ in His human nature and family connections was a descendant of David, a member of his family.
Source of the article
International Standard Bible Encyclopedia — James Orr, general editor and contributors; CrossWire SWORD module ISBE 2.2
Bible Strong digital edition from CrossWire module 2.2; historical scholarship originally published in 1915