late 14c., orix, also in Middle English origen, from Latin oryx, from Greek oryx (genitive orygos), an old name of some sort of Libyan and Egyptian antelope with pointed horns, perhaps originally the gazelle; "the digging animal," literally "pick-axe," but according to Beekes this is probably a folk-etymologizing of a borrowed word Used in Greek and Latin bibles to render Hebrew tho, which early English Bibles misidentified as everything from a small hibernating animal or dormouse to a kind of bird like a guinea hen to a wild bull. Now applied to a specific genus of large antelopes of North Africa and Arabia.
Thou shalt eate no abhominacion. These are the beestes which ye shal eate: Oxen, shepe, Goates, Hert, Roo, Bugle, wylde goate, Unicorne, Origen, and Camelion. [Coverdale translation of the Bible, Deuteronomy xiv.5, 1535]