colloid

/ˈkɒl.ɔɪd/ (bre, ipa) · /ˈkɑː.lɔɪd/ (ame, ipa) · /ˈkä-ˌlȯid/ (ame, mw)

colloid — 名詞

  • colloidsingular
  • colloidsplural

1. a substance made up of very small bits of one material that stay floating evenly

1.名詞C2
釋義

膠體

微小顆粒均勻分散於另一物質中的混合物

a substance made up of very small bits of one material that stay floating evenly throughout another material, without dissolving or settling out

例句

Milk is a familiar colloid, since tiny drops of fat float evenly through the water inside it.

牛奶是常見的膠體，因為裡面有極小的脂肪顆粒均勻地分散在水中。

definitional example: X is a colloid

In her lab notebook, Jisoo described fog as a colloid of water droplets in air.

Jisoo 在實驗筆記中把霧描述成水滴分散於空氣中的膠體。

collocation: a colloid of [X] in [Y]

同義詞
  • suspension

    broader term; in a suspension particles eventually settle, while a colloid stays evenly mixed

  • emulsion

    a specific type of colloid where both materials are liquids, such as milk or mayonnaise

  • dispersion

    general scientific term for one substance spread through another, of which a colloid is one kind

反義詞
  • solution

    in a solution the substance fully dissolves; in a colloid the bits stay separate

文法句型

a colloid of [substance] in [substance]

用法筆記

Subject is usually a specific substance (milk, fog, paint, blood). Common in chemistry and biology textbooks; rarely used in everyday speech.

常見錯誤

❌Salt water is a colloid.
✅Salt water is a solution.
💡in a colloid the small bits do not dissolve; salt fully dissolves in water, so salt water is a solution, not a colloid.