pl. -·ri·ums or -·ria
- a swimming pool, esp. one indoors
- a building or facility housing a large swimming pool
Origin of natatoriumLate Latin ; from natatorius: see natatorial
An indoor swimming pool.
Origin of natatoriumLate Latin natat&omacron;rium, place for swimming, from neuter of Latin natat&omacron;rius, of swimming, from natatus, act of swimming, from past participle of natare, frequentative of nare, to swim; see natatorial.
(plural natatoriums or natatoria)
- (US) A swimming pool, especially an indoor one.
From Late Latin natatorium, noun use of the neuter singular of Latin natatorius "˜natatory, for swimming'.