A model or type of machinery or device which precedes the current (or later) one. Usually used to describe an earlier, outdated model.
One who precedes; one who has preceded another in any state, position, office, etc.; one whom another follows or comes after, in any office or position.
A vertex having a directed path to another vertex
One who predicts the future.
prognosis
A sign by which a future event may be known or foretold.
A prediction of the future.
Of, pertaining to or characterized by prognosis or prediction.