sclerenchyma

Definitions

1. A mechanical ground tissue, impermeable to water, which consists of cells having narrow lumen and thick, mineralized walls of lignin; present in stems, vascular bundles (of monocots), seed coverings, and vein and tips of leaves.
   countable, uncountable
2. The hard calcareous deposit in the tissues of the stony corals (Anthozoa).
   countable, uncountable

Equivalents

CEFR level