noun
: any of various fibers located in or associated with xylem and typically having an angular cross-section and heavily lignified walls with prominent bordered pits — compare phloem fiber
noun
: any of various fibers located in or associated with xylem and typically having an angular cross-section and heavily lignified walls with prominent bordered pits — compare phloem fiber
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012