also: ファイバ
Katakana noun for a fiber or fibrous material, often used in compounds such as 光ファイバー, カーボンファイバー, and in product wording like ファイバー入り. The Japanese word 繊維 is the more native/technical equivalent in many contexts.
This building is connected to the internet by optical fiber.
Carbon fiber is a light and strong material.
I bought a drink with added fiber at the convenience store.
This cereal contains fiber and is good for your health.
This helmet is made of fiber and is lightweight.