or na·ta·to·ry

[ney-tuh-tawr-ee-uh l, -tohr-, nat-uh- or ney-tuh-tawr-ee, -tohr-, nat-uh-]
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Origin of natatorial

First recorded in 1810–20; natat(ion) + -orial Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for natatorial

Historical Examples of natatorial

Word Origin and History for natatorial

1816, from natatory (adj.), from Latin natatorius, from natator "swimmer" (see natatorium) + -al.

Online Etymology Dictionary, © 2010 Douglas Harper