noun

respiration

respiration, breathing

His respiration was slow and steady.

His respiration was slow and steady.

Plants use carbon dioxide during respiration.

Plants use carbon dioxide during respiration.

((respiration)) the act of breathing His respiration was slow and steady.

Synonyms: breathing, inhalation, exhalation

From Latin 'respirare' (re- 'again' + spirare 'to breathe'). It means 'to breathe again and again'.

The 'spira' part is like 'spirit' or 'inspire' – all related to breath or life force.

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