antioxidant

IPA/ˌæntiˈɒksɪdənt/
KK[ˌæntiˈɑksədənt]IPA/ˌæntiˈɑːksɪdənt/

antioxidant — noun

  • antioxidantsingular
  • antioxidantsplural

1. a substance, often found naturally in foods such as fruit and vegetables, that h

1.名詞B2
釋義

a substance, often found naturally in foods such as fruit and vegetables, that helps prevent a chemical process called oxidation — a reaction that can damage the body's cells, similar to how metal rusts over time

例句

The nutritionist, Amara Okafor, told her patients that leafy greens are packed with natural antioxidants.

collocation: packed with antioxidants

A daily bowl of blueberries provides enough antioxidants to support healthy skin and eyes.

countable usage: provides antioxidants as a general property

同義詞
  • free radical scavenger

    a more technical term used in scientific writing for the same function

  • preservative

    overlaps in the food-storage sense, but preservative is broader and includes synthetic chemicals

反義詞
  • oxidant

    a substance that causes oxidation, the opposite chemical effect

文法句型

antioxidant in [food]

rich in antioxidants

antioxidant-rich [food]

用法筆記

Antioxidant can be used as a countable noun (referring to specific substances, e.g. 'vitamin C and E are antioxidants') or an uncountable mass noun (e.g. 'this fruit is high in antioxidant'). The compound form 'antioxidant-rich' is common in health writing.

常見錯誤

❌I take antioxidant every morning.
✅I take an antioxidant supplement every morning.
💡When used as a countable singular noun, antioxidant usually needs a determiner (a, the, some).
❌Vitamin C is an antioxidant that prevents colds.
✅Vitamin C is an antioxidant that supports the immune system.
💡Vitamin C does not reliably prevent colds; avoid overstating health claims.