Then when she was quite strong, she had gone to the natatorium.
She shivered a little, though it was warm in the natatorium.
You're a champion swimmer–go to some natatorium and give swimming lessons.
Nearest them was a two-story structure of light-colored stone which Inspector Burton pointed out as the natatorium.
Here in this gem of a natatorium one can swim in water above blood heat, five feet deep and twenty-five from rim to rim.
There was a high chute beside the natatorium, and a staircase for the bathers to climb to the top "to shoot the chutes."
1890, New Englandish word for "swimming pool," from Latin natator "swimmer" (from nare "to swim") + -ium, neuter suffix. Latin nare is from PIE root *sna- "to swim" (cf. Sanskrit snati "bathes;" Avestan snayeite "washes, cleans;" Armenian nay "wet, liquid," Greek notios "wet, damp," nekhein "to swim;" Middle Irish snaim "I swim," snam "a swimming"). Middle English had natatorie "a pool, bath," early 14c., from Latin.