nước đái quỷ
Definition
- Noun:
- Ammonia: A chemical compound with the formula NH₃, a colorless gas with a pungent odor, used in cleaning products, fertilizers, and industrial applications. This is an archaic or colloquial term in Vietnamese.
Usage Examples
- Noun:
- Trong xưởng nhuộm vải có mùi nước đái quỷ rất khó chịu. (The dyeing workshop has a very unpleasant smell of ammonia.)
- Ngày xưa, người ta gọi amoniac là nước đái quỷ. (In the old days, people called ammonia "nước đái quỷ".)
Advanced Usage
- This term is considered obsolete, vulgar, or highly colloquial in modern Vietnamese. It is primarily found in historical texts, older literature, or used in a very informal context to describe a strong ammonia smell.
- Cái mùi trong chuồng ngựa này như mùi nước đái quỷ vậy. (The smell in this horse stable is like the smell of ammonia.)
Variants and Related Words
- Amoniac (noun): The modern, standard Vietnamese term for ammonia.
- Amoniac là một hóa chất quan trọng trong công nghiệp. (Ammonia is an important chemical in industry.)
- Khí amoniac (noun phrase): Ammonia gas.
- Dung dịch amoniac (noun phrase): Ammonia solution.
Synonyms
- Amoniac (noun): Ammonia (the standard term).
- Khí NH₃ (noun phrase): NH₃ gas (scientific term).
Notes on Usage
- Register: The term 'nước đái quỷ' is archaic and vulgar. It is strongly recommended to use the standard term 'amoniac' in all formal, scientific, educational, and polite contexts.
- Etymology: The term literally translates to "devil's urine," reflecting its strong, offensive odor. This etymology explains its vulgar nature and why it has fallen out of polite usage.
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(cũ)Amoniac
