|strad.ə|grafik, -ratə-, -fēk adjective
also strat·i·graph·i·cal -fə̇kəl, -fēk-
Etymology: stratigraphic from stratigraphy + -ic; stratigraphical from strati- + -graphical
: of, relating to, or determined by stratigraphy
• strat·i·graph·i·cal·ly -fə̇k(ə)lē, -fēk-, -li adverb