heavy oxygen: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “heavy oxygen” mean?
An isotope of oxygen (oxygen-18) with two extra neutrons, making it heavier than the more common oxygen-16.
Audio
Pronunciation
Definition
Meaning and Definition
An isotope of oxygen (oxygen-18) with two extra neutrons, making it heavier than the more common oxygen-16.
In environmental science and geology, the ratio of heavy oxygen to light oxygen isotopes serves as a proxy for past temperatures, precipitation patterns, and ice volume.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage, spelling, or meaning.
Connotations
Purely scientific and neutral in both varieties.
Frequency
Extremely rare outside specialised academic and research publications in both regions.
Grammar
How to Use “heavy oxygen” in a Sentence
The [ice core/foraminifera] contains a record of heavy oxygen ratios.Scientists measured the heavy oxygen in the [sample/precipitation].The [increase/decrease] in heavy oxygen indicates [warmer/colder] conditions.Vocabulary
Collocations
Examples
Examples of “heavy oxygen” in a Sentence
adjective
British English
- The heavy-oxygen composition was analysed.
American English
- The heavy-oxygen content was measured.
Usage
Meaning in Context
Academic
The heavy oxygen signature in foraminiferal calcite is a cornerstone of paleoclimatology.
Technical
The δ¹⁸O value, representing the ratio of heavy oxygen to light oxygen, is reported in per mil relative to VSMOW.
Vocabulary
Synonyms of “heavy oxygen”
Strong
Neutral
Weak
Vocabulary
Antonyms of “heavy oxygen”
Watch out
Common Mistakes When Using “heavy oxygen”
- Using 'heavy oxygen' to refer to air that is difficult to breathe (e.g., humid air).
- Treating it as an adjective-noun pair instead of a fixed compound noun (e.g., 'the oxygen that is heavy').
FAQ
Frequently Asked Questions
No, oxygen-18 (heavy oxygen) is a stable isotope, not radioactive.
Yes, but in very small amounts. About 0.2% of the oxygen in naturally occurring water is oxygen-18.
Water molecules containing heavy oxygen evaporate less easily and condense more readily. Therefore, changes in its ratio in ice or ocean sediments record changes in global temperature and ice volume.
'Light oxygen' or oxygen-16 (¹⁶O), which is the most common isotope.
An isotope of oxygen (oxygen-18) with two extra neutrons, making it heavier than the more common oxygen-16.
Heavy oxygen is usually technical/scientific in register.
Heavy oxygen: in British English it is pronounced /ˌhev.i ˈɒk.sɪ.dʒən/, and in American English it is pronounced /ˌhev.i ˈɑːk.sɪ.dʒən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Imagine a heavy weightlifter breathing deeply. The 'heavy' air he breathes is 'heavy oxygen' – a denser, heavier form of the element.
Conceptual Metaphor
Heavy oxygen acts as a 'thermometer' or 'rain gauge' frozen in time within ancient ice and fossils.
Practice
Quiz
In which field is the term 'heavy oxygen' primarily used?