Definition

1. Noun (Chemistry):
   • Flask with a curved neck: A specialized piece of laboratory glassware, characterized by a round body and a distinctively curved or bent neck. It is used in distillation and other chemical processes where reflux or condensation control is required.

Usage Examples

• Noun:
  • Nhà hóa học sử dụng nồi cổ cong để chưng cất. (The chemist uses a flask with a curved neck for distillation.)
  • Nồi cổ cong giúp ngưng tụ hơi chất lỏng hiệu quả. (The flask with a curved neck helps to condense liquid vapor effectively.)

Advanced Usage

• This term is highly specialized and is primarily used in scientific, particularly chemical, contexts. It is not common in everyday language.

Variants and Related Words

• Bình cổ cong (n): A direct synonym, also meaning a flask or retort with a curved neck.
  • Bình cổ cong là dụng cụ thí nghiệm quan trọng. (The flask with a curved neck is an important laboratory instrument.)

Synonyms

• Curved-neck flask: A descriptive English term.
• Retort: A general term for a vessel used for distillation, which often has a long, curved neck.

Notes on Usage

• The term 'nồi cổ cong' is technical. In most general or educational contexts, the synonym 'bình cổ cong' is more commonly used in Vietnamese to refer to this laboratory apparatus.