Natatorium
na·ta·to·ri·um
[ˌnātəˈtôrēəm,]
Noun :
- North American
a swimming pool, especially one that is indoors.A natatorium (plural: natatoria) is a building containing a swimming pool. In Latin, a cella natatoria was a swimming pool in its own building, although it is sometimes also used to refer to any indoor pool even if not housed in a dedicated building (e.g., a pool in a school or a fitness club).
— wiki/Natatorium
Origin: late 19th cent.: from late Latin, neuter (used as a noun) of natatorius ‘relating to a swimmer,’ from natare ‘to swim.’
Forms:Oxford Dictionary
natatorium (noun)
natatoriums (plural noun)