Standard Lemma guide

nudibranch

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈn(j)uːdɪˌbɹæŋk/
  • UK: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A sea slug belonging to the order Nudibranchia.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: nudi

Antonyms: none provided

2

noun

Meaning 2

any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: sea slug

Antonyms: none provided

Broader terms: gastropod, univalve

Narrower terms: Hermissenda crassicornis

History

Etymology

Circa 19th century, borrowed from translingual Nudibranchia, from Latin nudus (“naked”) + branchia (“gills”).

Across languages

Translations

14 source translations are retained for this English entry.

  • Catalan: nudibranqui — sea slug
  • Chinese Mandarin: 裸鰓類 /裸鳃类 (luǒsāilèi) — sea slug
  • Faroese: bertáknur — sea slug
  • Finnish: vapaakiduskotilo — sea slug
  • French: nudibranche — sea slug
  • German: Nacktkiemer — sea slug
  • Irish: núdabrainciach — sea slug
  • Italian: nudibranchio — sea slug
  • Korean: 갯민숭달팽이 (gaenminsungdalpaeng'i) — sea slug
  • Navajo: chʼoshłóóʼ bitsʼaʼ ádinígíí — sea slug
  • Polish: nagoskrzelny — sea slug
  • Portuguese: nudibrânquio — sea slug
  • Russian: голожа́берный (goložábernyj) — sea slug
  • Spanish: nudibranquio — sea slug