respiration

Meanings

1. 1
   noun

   The process of breathing in and out.

   The doctor checked the patient's respiration and heart rate.

2. 2
   noun

   A single complete breath in and out.

   A resting adult takes about twelve to twenty respirations per minute.

3. 3
   noun

   The biological process by which cells release energy from food using oxygen.

   In biology class we learned how respiration turns sugar into energy inside our cells.

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

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