Definition of phellem in US English:

phellem

noun

Botany
  • The outermost, protective layer of the periderm of plant shoots and roots, typically composed of tightly packed, suberized cells; cork tissue.

Origin

Late 19th century; earliest use found in Proceedings of the Royal Society of London. From German Phellem from ancient Greek ϕελλός cork + German -em.

Pronunciation

phellem

/ˈfɛləm/