Did you know?

It is commonly claimed, in a commercial context, that the word SPA is an acronym of various Latin phrases such as "Salus Per Aquam" or "Sanitas Per Aquam" meaning "health through water". This is very unlikely: the derivation does not appear before the early 21st century and is probably a backronym as there is no evidence of acronyms passing into the language before the 20th century; nor does it match the known Roman name for the location.