bathymetry, bathymetric 1. The measurement of the depths of oceans, seas, or other large bodies of water. 2. The data derived from such measurement; especially, as compiled in a topographic map. 3. The process of measuring the depths of sea or oceans. 4. The science of measuring ocean depths in order to determine the sea floor topography. Found on http://www.wordinfo.info/words/index/info/view_unit/1302/6