vas

IPA/ˌviː.eɪˈes/
IPA/ˌviː.eɪˈes/

vas — noun

1. a straight line with opposite descriptions at each end, used to measure how stro

1.名詞C1
釋義

a straight line with opposite descriptions at each end, used to measure how strongly someone feels something — for example, a patient marks a point between 'no pain' and 'worst pain'.

例句

A nurse asked Minh to mark his pain on a VAS from zero to ten.

countable noun: 'a VAS' referring to one scale

Felix marked the VAS to show how much he agreed with the hospital's new low-salt diet.

同義詞
  • rating scale

    broader category; includes numbered scales, not just line-based ones

  • continuous scale

    more general term for any unmarked line scale in research

文法句型

VAS + noun (VAS score)

on a VAS

mark on the VAS

用法筆記

VAS is almost always written in capital letters as an abbreviation. The full form 'visual analogue scale' is preferred in formal academic writing, while 'VAS' is common in clinical notes, reports, and spoken medical language.

常見錯誤

❌The patient circled the number 5 on the VAS.
✅The patient marked a point on the VAS line between the two descriptions.
💡A VAS is a continuous line without numbered intervals; the patient marks any position along it.

2. a narrow tube inside a human or animal body through which a liquid substance suc

2.名詞C1
釋義

a narrow tube inside a human or animal body through which a liquid substance such as blood or sperm travels from one place to another.

例句

The surgeon traced each thin tube-shaped vas inside the patient's abdomen before the operation.

countable: 'each vas' for individual tubes

In men, the vas deferens carries sperm from the testicles to the urethra during ejaculation.

fixed Latin phrase: vas deferens

同義詞
  • vessel

    more common in general use; 'vas' is the more technical anatomical term

  • duct

    refers to tubes that carry gland secretions, usually not blood

  • canal

    wider and less precise; often describes a channel in bone or other tissue

文法句型

vas + of + body part

plural: vasa

用法筆記

The plural form is 'vasa' (not 'vases'). This term appears most often in fixed phrases such as 'vas deferens' (the sperm duct) and in formal anatomical descriptions. In everyday clinical language, 'vessel' or 'duct' is much more common than 'vas' as a general word.

常見錯誤

❌The doctor checked both vases.
✅The doctor checked both vasa (plural of vas).
💡The plural of 'vas' is 'vasa', following Latin, not English 'vases'.
❌He had surgery on his vas deferens to fix the blood flow.
✅He had surgery on his vas deferens to fix the sperm transport.
💡The vas deferens carries sperm, not blood.