The Collaborative International Dictionary
Jahvist
Yahwist \Yah"wist\, n. Also Jahvist \Jah"vist\, Jahwist \Jah"wist\, older Jehovist \Je*ho"vist\ The author of the passages of the Old Testament, esp. those of the Hexateuch, in which God is styled Yahweh, or Jehovah; the author of the Yahwistic, or Jehovistic, Prophetic Document (J); also, the document itself.
Jahvist
Jahvist \Jah"vist\, n., Jahvistic \Jah*vis"tic\, a. See Jehovist, Jehovistic.