homolographic

hom·o·lo·graph·ic

 (hŏm′ə-lə-grăf′ĭk)
adj.
Maintaining the ratio of parts.

[Greek homalos, even; see sem- in Indo-European roots + graphic.]

homolographic

(həʊˌmɒləˈɡræfɪk) or

homalographic

adj
(Physical Geography) cartography another term for equal-area