convert (n.) Look up convert at Dictionary.com
1560s, from convert (v.). Earlier was convers (early 14c.).
convert (v.) Look up convert at Dictionary.com
c. 1300, from Old French convertir, from Vulgar Latin *convertire, from Latin convertere "turn around, transform," from com "with, together" (see com-) + vertere "to turn" (see versus). Originally in the religious sense. The Latin word is glossed in Old English by gecyrren, from cierran "to turn, return." Related: Converted; converting.