in·ter·nal·ly \(ˈ)in.|tərnəlē, ən.ˈt-, -tə̄n-, -təin-, -li\adverb 1.: within the termini, enveloping surface, or boundary of a thing : within the body : beneath the surface : inwardly 2.: mentally : spiritually 3.: in or in respect to the inner constitution or affairs of something < a doctrine internally inconsistent >