Definition

Noun: - Realgar: A naturally occurring arsenic sulfide mineral (As₄S₄ or AsS), typically with a bright red to orange-yellow color. It is used as a pigment and historically in traditional medicine.

Usage Examples

• Noun:
  • Hùng hoàng là một khoáng chất có chứa asen. (Realgar is a mineral containing arsenic.)
  • Màu sắc của hùng hoàng rất dễ nhận biết. (The color of realgar is very distinctive.)
  • Trong y học cổ truyền, hùng hoàng đôi khi được sử dụng với liều lượng rất nhỏ. (In traditional medicine, realgar is sometimes used in very small doses.)

Advanced Usage

• As a specific term: The word is a specific scientific/mineralogical term. It is not typically used in figurative or idiomatic expressions in modern Vietnamese.
• Contextual Use: Primarily used in contexts related to geology, mineralogy, chemistry, traditional medicine, or historical pigments.

Variants and Related Words

• Asen sunfua (Arsenic sulfide): The chemical name for the compound.
• Thuốc màu (Pigment/Dye): A general term for coloring agents, which is one application of .

Synonyms

• Realgar (English loanword used in scientific contexts): This is the direct equivalent.
• Arsenic disulfide: A less common chemical name (As₂S₂).

Important Notes

• Toxicity Warning: contains arsenic and is highly toxic. Its use, especially in medicine, is heavily restricted or banned in many countries due to serious health risks.
• Technical Term: This is a specialized term. In everyday conversation, most Vietnamese speakers would recognize it as a classical/technical word rather than a common one.

1. Realgar