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1. the intake and expulsion of air during respiration
2. the air inhaled or exhaled during respiration
3. a single respiration or inhalation of air, etc
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

What does it mean when you dream about breath?

Many people have problems breathing during sleep, even if they do not have full-blown apnea, and this can be reflected in one’s dream life. If not an apnea symptom, holding one’s breath in a dream represent an expression of will, or repressing one’s anxieties or emotions. Breathing is also central to an unusually large number of idioms: “a breath of fresh air,” “a waste of breath,” “take your breath away,” “catch your breath,” “out of breath,” and the like, any one of which could find expression in one’s dreams.

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.
References in periodicals archive ?
Weigh the mass of the syringe containing the exhaled air and calculate the mass of exhaled air by subtracting the mass of the syringe containing the exhaled air from the mass of the vacuum syringe.
Carbon monoxide was measured in the exhaled air of all the professionals who worked in the ICUs in order to ascertain tobacco use with greater reliability.
Given the all reduced effects of adsorbing typical gases of lung cancer on the resistance of Ti[O.sub.2], the working principle of the biosensors would be based on the reduced resistance after the detection of exhaled air of possible lung cancer patients regardless of which kind of typical gas it is.
(1) cumulative dose of [sup.13]C methacetin recovered from the exhaled air (% cumulative dose, %CD), defined as the percentage of the exhaled [sup.13]C[O.sub.2] relative to the amount of [sup.13]C methacetin that was administered.
In cold air there is not much water vapour but warm exhaled air is almost completely saturated with water vapour from its passage over the warm surfaces of the lungs and airways.
Or perhaps they should take inspiration from a camel's nose, which uses heat-exchange membranes to extract water from exhaled air, and in the process cools its brain.
Oksala, MD, PhD, DSc, of the Department of Surgery, School of Medicine, University of Tampere and Department of Vascular Surgery, Tampere University Hospital, Finland, said eNoses have been studied in various medical applications, including early detection of cancer, especially from exhaled air.
This can be done with air-to-air heat exchangers, which exhale warm, but stale, air through the exchanger while inhaling outside, fresher air, which is warmed by the exhaled air as it passes through the vanes of the exchanger.
(Exhaled air pushed water out of the bottle.) Explain that the air in the bottle represents lung capacity.
Exhaled air, also referred to as exhaled breath, is therefore also suitable for analysis in biological monitoring.