Thin thread-like structures or materials, such as found in plants, animals, or textiles, often used to make fabric or rope.
From Latin 'fibra' (fiber or filament), possibly from an Indo-European root meaning 'to split.' The British spelling 'fibres' preserves the Latin form, while American English uses 'fibers.'
Dietary fiber, optical fibers, muscle fibers—the word 'fiber' appears across biology, technology, and nutrition! This shows how one ancient Latin word for a thin strand became essential vocabulary for explaining everything from how our bodies work to how the internet functions.
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