noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An outer layer of skin.
2. 2
   the outer germ layer that develops into skin and nervous tissue wordnet
3. 3
   The outermost layer of cells in a developing embryo.

Synonyms

All synonyms

ectodermectodermectoblastepidermisepidermis

Etymology

From exo- + derm.

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