Definition

1. Noun:
   • Alcoholmeter / Alcoholometer: A scientific instrument, typically a sealed glass tube with a calibrated scale, used to measure the percentage of alcohol (ethanol) by volume in a liquid, such as a mixture of spirits and water.

Usage Examples

• Noun:
  • Người ta dùng tửu tinh kế để kiểm tra nồng độ cồn của rượu. (People use an alcoholmeter to check the alcohol concentration of spirits.)
  • Để biết chính xác độ mạnh, hãy thả tửu tinh kế vào bình. (To know the exact proof, immerse the alcoholmeter into the flask.)

Advanced Usage

• The term is technical and specific to the measurement of alcohol content. It is synonymous with the more general scientific term "hydrometer" when the hydrometer is specifically scaled for alcohol.
• In professional contexts like distilleries, wineries, or customs control, this instrument is essential for quality control and taxation purposes.

Variants and Related Words

• Đo nồng độ cồn (v): To measure alcohol concentration.
  • Phòng thí nghiệm đang đo nồng độ cồn của mẫu. (The lab is measuring the alcohol concentration of the sample.)
• Rượu kế: An alternative, less common term for the same instrument.
• Huyết áp kế (n): Sphygmomanometer (a device for measuring blood pressure). This shares the suffix "-kế" meaning "meter," but is for a completely different purpose.

Synonyms

• Alcoholmeter: The direct technical equivalent.
• Spirit hydrometer: A more descriptive term.
• Proof hydrometer: Specifically indicates scales used for measuring alcohol proof.

Related Terms and Context

• Nồng độ cồn (n): Alcohol concentration / Alcohol by volume (ABV).
  • Nhãn chai ghi rõ nồng độ cồn là 40%. (The bottle label clearly states an alcohol concentration of 40%.)
• Chưng cất (v): To distill.
  • Rượu được chưng cất nhiều lần để tăng độ tinh khiết. (The spirit is distilled multiple times to increase its purity.)