oxygen - Master This Word
Master this word with our 5-step learning method – Learn English in English
oxygen Word Meanings
- a chemical element essential for life
- a colorless gas that supports combustion
- a component of water
oxygen Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
oxygen Phonetic & Pronunciation
UK
/ˈɒksɪdʒən/
US
/ˈɑksɪdʒən/
oxygen Word Etymology
Oxy- = acid, gen = producer; from Greek 'oxus' (acid) and 'genes' (producer). Imagine a bubbling cauldron producing life-giving air as you breathe in the freshness.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputEnglish Brain Route
I take a slow breath and tilt my head toward the window, letting the air move through me. I feel the oxygen rush into my lungs, I hold, then ease my shoulders as I adjust my pace. A small shift happens in my chest, the room seems lighter, and I turn my attention to the rhythm of breathing. In everyday tasks—hiking, cooking, or pausing for a moment—the way I let air steady me shows how I use oxygen without thinking.
Real Context
Oxygen is the chemical element with symbol O and atomic number 8. It is a colorless, odorless gas at room temperature and makes up about 21% of Earth's atmosphere. It is essential for most life because it participates in cellular respiration, helping organisms extract energy from nutrients. Oxygen is also present in water, bound as part of the H2O molecule, and in many minerals as oxides. Industrially, it is produced by air separation or by processes such as electrolysis. The etymology traces back to Greek oxys meaning acid and genes meaning producer, evoking the idea of life-giving air as you breathe. In everyday English, oxygen is usually uncountable except in scientific or instrumental contexts.
Usage Reminders
- Oxygen is typically uncountable in everyday use.
- Do not say 'an oxygen'.
- Use 'oxygen' for the gas in general, and 'oxygen molecules' for specific units.
- Oxygen supports combustion but is not itself flammable.
- In water, oxygen is bound in H2O and not free as a separate molecule.
Common Misconceptions
- Oxygen is the same as air.
- Oxygen is highly reactive and flammable.
- Oxygen is a liquid at room temperature.
- All oxygen in the air is breathable by humans.
- Oxygen comes in a separate color (it's colored).
Thinking Differences
Explain to an English speaker (meta, keep short)
Learning Tips
- Study oxygen as a gas in general (uncountable).
- Learn the phrase 'oxygen molecules' for talking about individual units.
- Remember oxygen is a non-flammable gas but supports combustion.
- Note its presence in water as part of H2O.
- Practice distinguishing 'air' vs 'oxygen' in sentences.
- Be aware of scientific contexts where 'oxygen' may be counted.
5-Step Learning Method - Learn English in English
Step 2: Usage
Which of the following sentences uses 'oxygen' correctly?
A.The firefighter used oxygen to put out the fire.
B.She drank a glass of oxygen.
C.I bought a new oxygen of shoes.
D.He rode his oxygen to school.
Step 3: Similar Words
Which word is an opposite of 'oxygen'?
A.Water
B.Carbon
C.Helium
D.Nitrogen
Step 4: Opposite Words
In which real-life context would you encounter 'oxygen'?
A.At a circus
B.During scuba diving
C.In outer space
D.In a library
Step 5: Mastery
Can you explain why 'oxygen' is essential for human survival?
A.Answer 3
B.Answer 2
C.Answer 1
D.Answer 4
Related Listening
🔥 Advanced
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