Relating to the measurement, description, or mapping of ocean depths and seafloor topography.
From Greek 'bathos' (depth) + 'graphia' (writing, description). Emerged in marine science during the 19th-century age of ocean exploration.
Bathygraphic surveys revealed underwater mountain ranges (mid-ocean ridges) taller than the Rockies, completely hidden beneath the waves!
Complete word intelligence in one call. Free tier — 50 lookups/day.