Standard Lemma guide

meconium

noun · 3 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.

  • UK: /mɪˈkəʊnɪ.əm/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -əʊniəm

1

noun

Meaning 1

A dark green mass, the contents of the fetal intestines during the later stages of mammalian gestation, that forms the first feces of the newborn.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Opium.

Definition source: English Wiktionary via Wiktextract

Usage: countable, obsolete, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: aunti/aunti Emma, big O, chandu, Chinese tobacco, dopium, dream gun, dream stick, fi-do-nie, gee, God's medicine, gondola, goric, guma, hop/hops, meconium, midnight oil, mud, ope, pen yan, pin gon, pox, skee, toxy, when-shee, yen, ze, zero

Antonyms: none provided

3

noun

Meaning 3

thick dark green mucoid material that is the first feces of a newborn child

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: fecal matter, faecal matter, feces, faeces, BM, stool, ordure, dejection

History

Etymology

From Latin mēcōnium (“opium; excrement of a newborn child”), from Ancient Greek μηκώνιον (mēkṓnion, “poppy-juice, opium”), from μήκων (mḗkōn, “poppy”).

Across languages

Translations

19 source translations are retained for this English entry.

  • Arabic: عقي — contents of the fetal intestines
  • Catalan: meconi — contents of the fetal intestines
  • Czech: smolka — contents of the fetal intestines
  • Finnish: lapsenpihka — contents of the fetal intestines
  • German: Kindspech — contents of the fetal intestines
  • Irish: meacóiniam — contents of the fetal intestines
  • Italian: meconio — contents of the fetal intestines
  • Korean: 태변 (taebyeon) — contents of the fetal intestines
  • Malay: mekonium — contents of the fetal intestines
  • Polish: smółka — contents of the fetal intestines
  • Portuguese: mecônio — contents of the fetal intestines
  • Portuguese: mecónio — contents of the fetal intestines
  • Romanian: meconiu — contents of the fetal intestines
  • Spanish: meconio — contents of the fetal intestines
  • Spanish: alhorre — contents of the fetal intestines
  • Swedish: barnbeck — contents of the fetal intestines
  • Swedish: mekonium — contents of the fetal intestines
  • Urdu: عِقی ('iqī) — contents of the fetal intestines
  • Welsh: meconiwm — contents of the fetal intestines