Respiration

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late Middle English: from Latin respiratio(n- ), from respirare ‘breathe out’ (see respire).

wiktionary

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From Middle English respiracioun, borrowed from Latin respīrātiō, respīrātiōnem.

etymonline

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respiration (n.)

late 14c., respiracioun, "act or process of breathing, inhalation and exhalation of air by the lungs," from Latin respirationem (nominative respiratio) "breathing, respiration," noun of action from past-participle stem of respirare "breathe again, breathe in and out," from re- "again" (see re-) + spirare "to breathe" (see spirit (n.)). Extended to plants by 1831. Milton used it for "act of returning to life" ("breathing again").