a combining form meaning “depth,” used in the formation of compound words: bathometer.
Origin of batho-
combining form of Greek báthos; bathy-, stem of bathýs deep
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for batho-
a variant of bathy-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012