The capacity or quality of being able to breathe through something without obstruction or discomfort.
From 'breathe' (Old English breathan) plus '-able' (able to do) plus '-ness' (quality). This term is rarer than 'breathability,' suggesting more poetic or literal breathing rather than scientific measurement.
While scientists talk about fabric 'breathability' in grams of moisture per square meter, everyday people used 'breatheableness' when describing how comfortable it felt to actually *breathe* while wearing something—same concept, different perspectives!
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