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respiratory

[res-per-uh-tawr-ee, -tohr-ee, ri-spahyuh r-uh-] /ˈrɛs pər əˌtɔr i, -ˌtoʊr i, rɪˈspaɪər ə-/
adjective
1.
pertaining to or serving for respiration:
respiratory disease.
Origin of respiratory
1780-1790
1780-90; < Late Latin respīrātōrius, equivalent to Latin respīrā(re) to respire + -tōrius -tory1
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for respiratory

respiratory

/ˈrɛspərətərɪ; -trɪ/
adjective
1.
of, relating to, or affecting respiration or the organs used in respiration
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for respiratory
adj.

1660s, from Modern Latin respiratorius or French respiratoire; see respiration + -ory.

Online Etymology Dictionary, © 2010 Douglas Harper
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respiratory in Medicine

respiratory res·pi·ra·to·ry (rěs'pər-ə-tôr'ē, rĭ-spīr'ə-)
adj.
Of, relating to, used in, or affecting respiration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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