Having the shape or form of a hair or thread; extremely thin and threadlike in appearance.
From Latin capillus (hair) + -form (shape). The combining form -form comes from Latin forma meaning shape. This scientific term emerged in the 18th century to describe structures resembling hairs under magnification.
Botanists use this word to describe the delicate, hair-thin structures in plants like the feathery filaments of passionflower or the threadlike roots of certain aquatic plants—nature's way of maximizing surface area for absorption!
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