Standard Lemma guide

ectoderm

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The outermost of the three tissue layers in the embryo of a metazoan animal, which produces through development, the epidermis (skin) and nervous system of the adult.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

the outer germ layer that develops into skin and nervous tissue

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: exoderm, ectoblast

Antonyms: none provided

Broader terms: germ layer

Narrower terms: neural tube

History

Etymology

From ecto- + -derm.

Across languages

Translations

12 source translations are retained for this English entry.

  • Catalan: ectoderma — tissue layer in the embryo
  • Finnish: ektodermi — tissue layer in the embryo
  • French: ectoderme — tissue layer in the embryo
  • German: Ektoderm — tissue layer in the embryo
  • Hungarian: ektoderma — tissue layer in the embryo
  • Italian: ectoderma — tissue layer in the embryo
  • Polish: ektoderma — tissue layer in the embryo
  • Polish: ektoblast — tissue layer in the embryo
  • Portuguese: ectoderme — tissue layer in the embryo
  • Romanian: ectoderm — tissue layer in the embryo
  • Russian: эктоде́рма (ektodérma) — tissue layer in the embryo
  • Spanish: ectodermo — tissue layer in the embryo