Completely smooth and without hair, fuzz, or bristles, used especially to describe skin, leaves, or other plant surfaces.
From Latin glaber meaning 'smooth, hairless, bald.' The term entered English scientific vocabulary in the 17th century for precise botanical classification.
Glabrous leaves are like nature's sunbathers—without the protective fuzzy coating, they absorb light more efficiently, which is why desert plants are often hairy while shaded forest plants are glabrous!
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