The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster] Stratigraphic

The Collaborative International Dictionary of English v.0.48:

Stratigraphic \Strat`i*graph"ic\, -ical \-ic*al\, a. (Mil.)
   See Stratographic.
   [1913 Webster]