Meaning of FIBER in English

I. fi ‧ ber /ˈfaɪbə $ -ər/ BrE AmE noun [countable, uncountable]

[ Date: 1500-1600 ; Language: French ; Origin: fibre , from Latin fibra ]

the American spelling of ↑ fibre

II. fi ‧ bre BrE AmE British English , fiber American English /ˈfaɪbə $ -ər/ noun

1 . [uncountable] the parts of plants that you eat but cannot ↑ digest . Fibre helps to keep you healthy by moving food quickly through your body:

Fruit and vegetables are high in fibre content.

food that is high in dietary fibre

2 . [uncountable and countable] a mass of threads used to make rope, cloth etc

natural/synthetic/man-made etc fibre

Nylon is a man-made fibre.

3 . [countable] a thin thread, or one of the thin parts like threads that form natural materials such as wood or ↑ carbon

4 . nerve/muscle fibres the thin pieces of flesh that form the nerves or muscles in your body

5 . with every fibre of your being literary if you feel something with every fibre of your being, you feel it very strongly:

He wanted her with every fibre of his being.

⇨ moral fibre at ↑ moral 1 (2), ⇨ ↑ optical fibre

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.