mag'-ni-fi (Hiphil of gadhal; megaluno, "to make great," "extol," "celebrate in praise"): Used especially of exaltation of the name, mercy, and other attributes of God (Ge 19:19; 2Sa 7:26; Ps 35:27; 40:16; 70:4; Lu 1:46; Ac 10:46); of God's "word" (Ps 138:2); or of Christ (Ac 19:17; Php 1:20). Men also can be "magnified" (Jos 4:14; 1Ch 29:25, etc.). In Ro 11:13, "magnify mine office," the word (Greek, doxazo) is changed in the Revised Version (British and American) to "glorify."
The International Standard Bible Encyclopedia
Magnify
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.