Tapetum

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A membranous layer of tissue.
  2. 2
    The pigmentary layer of the retina.
  3. 3
    The cells on the outside of an archesporium.

Etymology

From Latin tapētum. Further from Ancient Greek τάπης (tápēs). Doublet of tapet.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.