Definition of "fiber" in English

noun

1. (countable) A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

   • The microscope showed a single blue fiber stuck to the sole of the shoe.

2. (uncountable) A material in the form of fibers.

   • The cloth is made from strange, somewhat rough fiber.

3. (textiles) A material whose length is at least 1000 times its width.

   • Please use polyester fiber for this shirt.

4. Dietary fiber.

   • Fresh vegetables are a good source of fiber.

5. (figuratively) Moral strength and resolve.

   • The ordeal was a test of everyone's fiber.

6. (mathematics) The preimage of a given point in the range of a map.

   • Under this map, any two values in the fiber of a given point on the circle differ by 2π.

7. (category theory) The pullback of a morphism along a global element (called the fiber of the morphism over the global element).

8. (computing) A kind of lightweight thread of execution.

9. (cytology) A long tubular cell found in bodily tissue.