adj.
Pronunciation: ˌ h ī -dr ə - ' gra-fik
Function: adjective
Etymology: French hydrographique, from Middle French, from hydr- + -graphique -graphic
Date: 1665
1 : of or relating to the characteristic features (as flow or depth) of bodies of water
2 : relating to the charting of bodies of water
– hy · drog · ra · pher \ h ī - ' drä-gr ə -f ə r \ noun
– hy · drog · ra · phy \ -gr ə -f ē \ noun