Definition of substitute fibre in English:

substitute fibre

(US substitute fiber)

noun

Botany
rare
  • A type of xylem fibre found in woody tissue, which consists of elongated, aseptate, partially lignified cells and is thought to form an intermediate between parenchyma (soft tissue) and tracheids.

Origin

Late 19th century; earliest use found in George Goodale (1839–1923). After German Ersatzfasern, plural noun.