noun
Anatomical term for a bundle of muscle or nerve fibers.
筋肉は線維束の集まりでできている。
Muscles are made up of collections of fascicles.
noun
fiber bundle; fibre bundle
General term for a bundle of fibers, used in biology, materials science, and mathematics.
この素材は細い線維束を編んで作られている。
This material is made by weaving thin fiber bundles.
Compound of 線維 (sen'i, 'fiber') + 束 (soku, 'bundle'). The kanji 線維 is a variant of 繊維, both meaning 'fiber'.