fibriform

As a noun terms

is .

As an adjective fibriform is

shaped like a fiber.

As adjectives the difference between fibriform and libriform

is that fibriform is shaped like a fiber while libriform is (botany) resembling or having the form of liber, or bast.

As a noun fiber

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

As an adjective fibriform is

shaped like a fiber.