amniotic fluid: meaning, definition, pronunciation and examples
C2Technical/Scientific, Medical, Formal
Quick answer
What does “amniotic fluid” mean?
The protective liquid surrounding the developing embryo or fetus inside the amniotic sac during pregnancy.
Audio
Pronunciation
Definition
Meaning and Definition
The protective liquid surrounding the developing embryo or fetus inside the amniotic sac during pregnancy.
In a broader medical context, it refers to the substance analysed for prenatal diagnosis, and colloquially it may be used in popular science to symbolize the origin of life or a protective environment.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling of related terms like 'foetal/fetal' may differ, but 'amniotic fluid' is invariant.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low-frequency and technical in both dialects, used primarily in medical contexts.
Grammar
How to Use “amniotic fluid” in a Sentence
The [noun] is/was immersed in amniotic fluid.Doctors analysed the amniotic fluid for [genetic markers].A leak of amniotic fluid can indicate [labour/rupture].Vocabulary
Collocations
Examples
Examples of “amniotic fluid” in a Sentence
verb
British English
- The midwife explained that the sac had not yet ruptured to release the amniotic fluid.
- They may need to artificially rupture the membranes to drain the amniotic fluid.
American English
- The doctor said they would need to collect amniotic fluid for the genetic test.
- The ultrasound showed that the fetus was swallowing amniotic fluid normally.
adjective
British English
- The amniotic-fluid volume was assessed via scan.
- She experienced an amniotic-fluid leak.
American English
- The amniotic fluid sample was sent to the lab.
- They performed an amniotic fluid analysis.
Usage
Meaning in Context
Business
Not applicable.
Academic
Used in medical, biological, and genetics papers and textbooks.
Everyday
Rare, only in discussions of pregnancy, childbirth, or prenatal testing.
Technical
Primary context. Used in obstetrics, midwifery, sonography, and prenatal diagnostics.
Vocabulary
Synonyms of “amniotic fluid”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “amniotic fluid”
- Mispronunciation: 'amniOtic' with stress on 'o' instead of 'amniOtic'.
- Misspelling: 'amneoitic', 'amniatic'.
- Using it as a countable noun (e.g., 'an amniotic fluid'). It is uncountable.
FAQ
Frequently Asked Questions
In informal medical or midwifery contexts, 'the waters' often refers to the amniotic fluid released when the amniotic sac breaks at the start of labour. They are the same substance.
Yes. Abnormally high levels (polyhydramnios) or low levels (oligohydramnios) can occur and may be associated with certain pregnancy conditions, monitored via ultrasound.
No. While it is mostly water, it contains vital nutrients, hormones, antibodies, and fetal cells, and its composition changes during pregnancy.
A leak, especially if it is a significant gush, often indicates rupture of the membranes (the amniotic sac) and can be a sign that labour is starting or that there is a risk of infection. Medical advice should be sought.
The protective liquid surrounding the developing embryo or fetus inside the amniotic sac during pregnancy.
Amniotic fluid is usually technical/scientific, medical, formal in register.
Amniotic fluid: in British English it is pronounced /ˌæmniˌɒtɪk ˈfluːɪd/, and in American English it is pronounced /ˌæmniˌɑːtɪk ˈfluːɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: AMNIOTIC = AMNion prOTECTS. The FLUID is Inside the Cushioning sac.
Conceptual Metaphor
LIQUID CRADLE / PROTECTIVE SEA (a life-sustaining, protective liquid environment).
Practice
Quiz
What is the primary function of amniotic fluid?