dehydration

dehydration — 名詞

1. a harmful physical state in which the body contains less water than it needs to

1.名詞B2
釋義

脫水

身體水分不足的狀態

a harmful physical state in which the body contains less water than it needs to work properly, often caused by illness, sweating, or not drinking enough fluids

例句

The nurse said the baby was suffering from mild dehydration after the fever.

護士說寶寶退燒後有輕微的脫水現象。

often modified by 'mild / severe / chronic'

Noor's doctor warned her that dehydration could make her feel dizzy and confused.

Noor 的醫生警告她，脫水可能會讓她感到頭暈和意識混亂。

同義詞
  • fluid loss

    a more general term that can refer to losing water from any fluid system, not just the body

  • desiccation

    more technical and usually describes extreme drying of materials or tissue, rarely used in everyday health contexts

  • water depletion

    sounds more scientific; often used in sports medicine or nutrition writing

反義詞
  • hydration

    the healthy state of having enough water in the body

文法句型

noun used without an article in general statements

often modified by adjectives: mild / severe / chronic dehydration

用法筆記

Commonly paired with adjectives that indicate severity: 'mild', 'moderate', or 'severe'. In medical writing, 'dehydration' is an uncountable noun and rarely takes an article.

常見錯誤

❌I have a dehydration.
✅I have dehydration.
💡'dehydration' is an uncountable noun and does not take 'a'.
❌She felt thirst but it was not dehydration yet.
✅She felt thirsty, but she was not dehydrated yet.
💡'thirst' is the feeling; 'dehydration' is the physical condition.

2. a method or process of taking water out of a substance such as food, so that it

2.名詞B2
釋義

乾燥處理

去除水分以保存物質的過程

a method or process of taking water out of a substance such as food, so that it lasts longer without spoiling or changes into a different form

例句

The factory uses a machine that dries fruit through dehydration, turning it into a light powder.

這家工廠利用脫水乾燥的方式將水果製成輕巧的粉末。

pattern: through dehydration (method / process)

In cooking class, Sahil learned about food dehydration and started making dried apples at home.

Sahil 在烹飪課上學到食物乾燥處理的方法，便開始在家自製蘋果乾。

同義詞
  • drying

    simpler, everyday word; 'dehydration' is more formal and technical

  • desiccation

    scientific term for thorough drying, often used in chemistry and biology

  • water extraction

    describes the action rather than the purpose (preservation)

反義詞
  • rehydration

    the process of adding water back to dried material

文法句型

noun + of + something: dehydration of [food / material]

用法筆記

Frequently followed by 'of' to specify the material being dried ('dehydration of fruit'). In food science contexts, it contrasts with 'freeze-drying' and 'air-drying' as specific techniques.

常見錯誤

❌The dehydration of the sick child worried the doctors.' (meaning medical condition) — This sentence mixes sense 2 with sense 1.
✅Use sense 1 for the medical condition: 'The child's dehydration worried the doctors.' The process sense is for food or materials.
❌I bought a dehydration for my kitchen.
✅I bought a dehydrator for my kitchen.
💡'dehydration' is the process; 'dehydrator' is the machine.