AskDefine | Define respiration

Dictionary Definition



1 the metabolic processes whereby certain organisms obtain energy from organic moelcules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs [syn: internal respiration, cellular respiration]
2 a single complete act of breathing in and out; "thirty respirations per minute"
3 the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation [syn: breathing, external respiration, ventilation]

User Contributed Dictionary



respiracioun, from respiratio, from respirare.


  1. The process of inhaling and exhaling; breathing, breath.
  2. Any similar process, in organisms that lack lungs, that exchanges gases with its environment.
  3. The process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide.

Derived terms


exchange of gases
  • Greek: αναπνοή
process of biological energy extraction



From respiratio, from respirare.




Extensive Definition

In biochemistry, respiration may refer to:
  • Cellular respiration, the process in which the chemical bonds of energy-rich molecules such as glucose are converted into energy usable for life processes
  • Anaerobic respiration, a process that allows respiration without use of oxygen
  • Plant respiration, the enzymatic oxidation of substrates in plants, leading to the release of carbon dioxide respiration.
In physiology, respiration may refer to :
Medical devices involving respiration include:
Other uses include:
  • Carbon respiration, a phrase used in combination with carbon storage to calculate the amount of carbon (as CO2) flux occurring in the atmosphere through the various processes that add and subtract atmospheric carbon
  • Respiration rate, a parameter which is used in ecological and agronomical modelling
respiration in Spanish: Respiración (desambiguación)
respiration in Dutch: Ademhaling
respiration in Chinese: 呼吸

Synonyms, Antonyms and Related Words

Aqua-Lung, artificial respiration, aspiration, asthmatic wheeze, breath, breath of air, breathing, broken wind, cough, exhalation, expiration, exsufflation, gasp, gulp, hack, hiccup, inhalation, inhalator, inspiration, insufflation, iron lung, mouth-to-mouth resuscitation, oxygen mask, oxygen tent, pant, puff, scuba, sigh, sneeze, sniff, sniffle, snore, snoring, snuff, snuffle, sternutation, stertor, suspiration, wheeze, wind
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