1899, from German batholith (1892), coined by German geologist Eduard Suess from Greek bathos "depth" (see benthos) + -lith "stone."
Entries linking to batholith
benthos n.
"life forms of the deep ocean and sea floor," 1891, coined by Haeckel from Greek benthos "depth of the sea," which is related to bathos "depth," bathys "deep, high;" which probably is Indo-European but of unknown origin. As an adjective, benthal is attested from 1877; benthic from 1902.
-lith
word-forming element meaning "stone, rock," from Modern Latin -lithus or French -lithe (see -lith).