The Collaborative International Dictionary
Balneal
Balneal \Bal"ne*al\, a. [L. balneum bath.]
Of or pertaining to a bath.
--Howell.
Douglas Harper's Etymology Dictionary
balneal
"pertaining to baths," from Latin balneum "bath," from Greek balaneion, which is of unknown origin.
Wiktionary
balneal
a. Of or pertaining to baths or to bathing