Respiration



GRE Barron TOEFL

解释

GRE 红宝书

• n. 呼吸
• ［英］ n. 呼吸 ( breathing)
• ［记］ re ( 来回) +spir ( 呼吸) +ation -> 呼吸
• ［例］ The thinning air hindered the climbers' respiration.

Webster Collegiate

noun

• Etymology: Middle English respiracioun, from Latin respiration-, respiratio, from respirare
• Date: 15th century
• 1.
  • a. the placing of air or dissolved gases in intimate contact with the circulating medium of a multicellular organism (as by breathing)
  • b. a single complete act of breathing
• 2. the physical and chemical processes by which an organism supplies its cells and tissues with the oxygen needed for metabolism and relieves them of the carbon dioxide formed in energy-producing reactions
• 3. any of various energy-yielding oxidative reactions in living matter
• ? respiratory adjective

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