Definition

1. Noun:
   • Placenta: In biology and medicine, "hà xa" refers specifically to the placenta, the organ that develops in the uterus during pregnancy to provide oxygen and nutrients to the growing fetus and to remove waste products from the fetus's blood.

Usage Examples

• Noun:
  • Sau khi sinh, bác sĩ đã kiểm tra hà xa cẩn thận. (After birth, the doctor examined the placenta carefully.)
  • Chức năng của hà xa là trao đổi chất giữa mẹ và thai nhi. (The function of the placenta is to exchange substances between the mother and the fetus.)

Advanced Usage

• This term is a shortened form (từ nói tắt) of the full term "tử hà xa" (tử = child, hà = river/carrier, xa = cart/vehicle), which is a Sino-Vietnamese term literally describing the organ as a "vehicle" carrying nutrients.
• It is a specialized medical/biological term and is not used in everyday casual conversation.

Variants and Related Words

• Tử hà xa (n): The full, formal term for placenta.
• Nhau thai (n): A more common and modern Vietnamese synonym for placenta. "Nhau" refers to the afterbirth, and "thai" means fetus.

Synonyms

• Nhau thai: Placenta (the most commonly used term in contemporary Vietnamese).
• Rau (n, informal/colloquial): A very common, short, and informal term for placenta, often used in everyday speech, especially among midwives and in traditional contexts. (Example: - "Has the placenta been delivered completely?")

Notes on Usage

• "Hà xa" is considered a technical, formal, or literary term. In modern medical contexts and everyday language, "nhau thai" is far more prevalent.
• The informal term "rau" is widely understood but is very colloquial and may be considered crude in formal settings.
• Understanding that "hà xa," "tử hà xa," "nhau thai," and "rau" can refer to the same organ is important, with the choice of word depending heavily on the register (formal vs. informal) and context (medical, biological, or casual conversation).

1. (từ hà xa nt) Placenta