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Nitrogen

UK //ˈnaɪtrədʒən// US //ˈnaɪtrədʒən// Pronunciation

Definition

A colorless, odorless gas essential for life, making up 78% of Earth's atmosphere.

Listen to definition

In simple words: A colorless gas that is part of the air we breathe.

Examples

• Nitrogen is essential for plant growth and photosynthesis.
• The atmosphere consists mostly of nitrogen and oxygen.
• Excess nitrogen can cause water pollution in lakes and rivers.
• Nitrogen gas is often used in food packaging to prolong shelf life.
• In the lab, we studied nitrogen's role in chemical reactions.

Usage notes

Commonly used in scientific contexts; avoid in casual conversation unless discussing science or gardening.

Grammar pattern

standalone noun

Memory hint

Think of 'night' and 'green' - nitrogen is key for plants to grow green like at night.

Collocations

• nitrogen gas
• nitrogen cycle
• nitrogen fixation

Synonyms

• N
• dinitrogen
• nitro

Common mistakes

• Confused with 'nitrate', which is a chemical compound containing nitrogen.
• Mispronouncing as 'nitro-jen' instead of 'nai-trə-jən'.