What does "meconium" mean?
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.
Meconium
/mɪˈkəʊnɪ.əm/ noun
noun ·Rare ·Advanced level
Meaning at a glance
- Primary sense: 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.
- Grammar: meconium is listed as noun.
- Nearest alternatives: amniotic meconium, fetal stool, first stool, in utero feces.
- Useful contrasts: adult feces, clear amniotic fluid, meconium-free fluid.
- Usage evidence: The meconium is dark brownish-green in color. The first meconium passed is semi-solid, having been partially dried out in the large intestine.
How to use "meconium"
- Start with the primary definition, then check the part of speech before placing the word in a sentence.
- Compare nearby synonyms to make sure "meconium" carries the exact meaning, tone, and strength you need.
- Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.
Meaning check
- Does the word fit the sentence's grammar?
- Does it match the intended tone rather than only the dictionary definition?
- Would a simpler synonym be clearer for the reader?
- Is there enough surrounding context to prevent ambiguity?
Source and review context
This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "meconium" in a final draft.
If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.
Before you rely on this definition
Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "meconium" as the right word for your sentence.
If your draft is formal, technical, persuasive, or sensitive, compare "meconium" with a nearby alternative so the final choice matches both meaning and reader expectation.
Compare nearby meanings
- Use synonyms when you need a softer, stronger, simpler, or more specific word.
- Use antonyms to check the boundary of the meaning and avoid accidental contrast.
- Use the example sentence to confirm the word behaves naturally in context.
- Keep the original wording when a replacement adds complexity without improving precision.
Definition decision workflow
1. Identify the role
Check whether "meconium" is acting as noun in your sentence. A definition is only useful when the grammar matches the way the word is being used.
2. Test the nearest option
Compare it with "amniotic meconium" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.
3. Confirm with context
Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.
Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.
Final meaning check
Before publishing a sentence with "meconium", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.
When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.
Definitions
Noun
- 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. countable, uncountable
"The meconium is dark brownish-green in color. The first meconium passed is semi-solid, having been partially dried out in the large intestine."
- 2 thick dark green mucoid material that is the first feces of a newborn child wordnet
- 3 Opium. countable, obsolete, uncountable
Synonyms
All synonyms amniotic meconiumfetal stoolfirst stoolin utero fecesmeconium in liquormeconium stained liquor
Antonyms
adult fecesclear amniotic fluidmeconium-free fluidpostnatal stool
Example
"The meconium is dark brownish-green in color. The first meconium passed is semi-solid, having been partially dried out in the large intestine."
Common questions
What is a synonym for "meconium"?
Common synonyms include: amniotic meconium, fetal stool, first stool, in utero feces, meconium in liquor, meconium stained liquor.
How do you use "meconium" in a sentence?
The meconium is dark brownish-green in color. The first meconium passed is semi-solid, having been partially dried out in the large intestine.
How do you pronounce "meconium"?
Pronounced /mɪˈkəʊnɪ.əm/.
Etymology
From Latin mēcōnium (“opium; excrement of a newborn child”), from Ancient Greek μηκώνιον (mēkṓnion, “poppy-juice, opium”), from μήκων (mḗkōn, “poppy”).