Meaning & Definition of word "Respiration"

noun:

• 1. The process of inhaling and exhaling air; the physiological process of exchanging gases between the body and the environment.
  • Example: Respiration is essential for the survival of living organisms as it provides the necessary oxygen.
• 2. The biochemical processes in cells that convert nutrients into energy, typically involving the intake of oxygen and the release of carbon dioxide.
  • Example: Cellular respiration occurs in the mitochondria of cells.
• 3. The act of breathing or the exchange of gases in the lungs.
  • Example: After strenuous exercise, my respiration rate increases significantly.
• 4. The process by which organisms obtain energy from food, often through oxidation.
  • Example: Photosynthesis in plants contributes to respiration by producing oxygen.