Respiration Definition

rĕspə-rāshən
noun
Act or process of respiring; breathing; inhaling and exhaling air.
Webster's New World
An act of inhaling and exhaling; a breath.
American Heritage Medicine
The action or process by which an organism without lungs, such as a fish or plant, exchanges gases with its environment.
American Heritage Medicine
The processes by which a living organism or cell takes in oxygen from the air or water, distributes and utilizes it in oxidation, and gives off products of oxidation, esp. carbon dioxide.
Webster's New World
An analogous process in anaerobic organisms involving some substance other than free oxygen.
Webster's New World

Other Word Forms of Respiration

Noun

Singular:
respiration
Plural:
respirations

Origin of Respiration

  • Middle English respiracioun, from Latin respiratio, from respirare.

    From Wiktionary

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