American Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition fiber in American English

fiber noun

noun
/ˈfaɪbər/
1

the parts of fruit, vegetables, and grains that your body cannot digest (=change into substances it can use). It helps food to pass through your body

Example

dietary fiber

Example

foods that are high in fiber

Synonyms and related words
2

a long thin piece of a natural or artificial substance, similar to a thread or hair in shape

Example

Coir is a strong material made from coconut fibers.

Synonyms and related words
2.1

a type of cloth or similar material made of fibers

Example

natural fibers such as linen and cotton

Example

tubes made of carbon fiber

Synonyms and related words
3

one of the thin pieces that form the nerves and muscles in your body

Example

Messages pass along the nerve fibers.

Synonyms and related words
Definition fiber in American English