+A **filament** is a very fine, thread-like structure or [fiber](/wiki/fiber). These slender forms are essential in diverse contexts, from the glowing element in a [light bulb](/wiki/light_bulb) to the microscopic components within a cell.
+## See also
+- [Thread](/wiki/thread)
+- [Polymer](/wiki/polymer)
+- [Cytoskeleton](/wiki/cytoskeleton)
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