rate of respiration
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|Noun||1.||rate of respiration - the rate at which a person inhales and exhales; usually measured to obtain a quick evaluation of a person's health|
vital sign - sign of life; usually an indicator of a person's general physical condition; "he was still alive but his vital signs were weak"
rate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected"
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