a very slender natural or synthetic fiber
A linear pattern in the H-alpha chromosphere of the Sun, as seen through an H-alpha filter, occurring near strong sunspots and plages or in filament channels.
Thread-like element unraveled from the fibre wall.
A small filament or fiber.
A threadlike component of cell walls, visible under a light microscope. - Category: Guitar Repair/Building
A tiny threadlike element of a synthetic or natural fiber.
Fibril is a fine fiber approximately 1 nm in diameter.