Definition of "conceptually"

The end of the 20th century and the start of the new millennium have bore witness to a remarkable revolution in the way parasite/host biological interactions can be conceptually designed and experimentally studied.

2006 February 10, Karl F. Hoffman, Jennifer M. Fitzpatrick, “The Application of DNA Microarrays in the Functional Study of Schisostome/Host Biology”, in W. Evan Secor, Daniel G. Colley, editors, Schistosomiasis, Springer Science & Business Media, page 101