amniotic fluid
Học thuậtThân thiện
Definition
Noun: The clear, slightly yellowish liquid that surrounds and protects a developing embryo or fetus inside the amniotic sac (amnion) within the uterus. It serves as a cushion against shocks, helps regulate temperature, and allows for fetal movement and development.
Usage
This term is used specifically in medical, biological, and general contexts related to pregnancy and childbirth. - It is a non-count (uncountable) noun. - It is often referred to informally as "the waters."
Examples
- The doctor explained that amniotic fluid levels were normal for the pregnancy.
- An analysis of the amniotic fluid can detect certain genetic conditions.
- The protective amniotic fluid allows the baby to move freely.
Advanced Usage
- "Amniotic fluid index (AFI)": A measurement used in ultrasound to assess the volume of amniotic fluid.
- "Amniotic fluid embolism": A rare but serious childbirth complication.
- "To break one's waters": An informal phrase meaning the amniotic sac ruptures, releasing the fluid, signaling the onset of labor. (e.g., )
Variants and Related Words
- Amniocentesis (noun): A medical procedure involving the extraction of a small amount of amniotic fluid for testing.
- Amnion (noun): The innermost membrane that encloses the embryo and contains the amniotic fluid.
- Liquor amnii (noun): The technical/medical Latin term for amniotic fluid.
Synonyms
- Waters (informal)
- Amniotic liquor (technical)
Notes on Different Meanings
The term "amniotic fluid" has only one primary meaning related to embryology and obstetrics. There are no distinct idiomatic or phrasal verb uses, as it is a specific scientific term.
Noun
- the serous fluid in which the embryo is suspended inside the amnion
- before a woman gives birth her waters break