Stratigraphic \Strat`i*graph"ic\, Stratigraphical \Strat`i*graph"ic*al\, a. (Geol.) Pertaining to, or depended upon, the order or arrangement of strata; as, stratigraphical evidence. -- {Strat`i*graph"ic*al*ly}, adv. Stratigraphic \Strat`i*graph"ic\, -ical \-ic*al\, a. (Mil.) See {Stratographic}.