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Definition of Respiratory rate
1. Noun. The rate at which a person inhales and exhales; usually measured to obtain a quick evaluation of a person's health.
Medical Definition of Respiratory rate
1. The number of breaths per minute (or, more formally, the number of movements indicative of inspiration and expiration per unit time). In practice, the respiratory rate is usually determined by counting the number of times the chest rises (or falls) per minute. By whatever means, the aim is to determine if the respirations are normal, abnormally fast (tachypnea), abnormally slow (technically termed bradypnea), or nonexistent (apnea). (12 Dec 1998)