1
potassium(noun, element)
1
praseodymium(noun, element)
1
promethium(noun, element)
1
prop
1
propane
1
protactinium(noun, element)
1
radium(noun, element)
1
rarefaction(noun, gas)
1
rhenium(noun, element)
1
rhizobium
1
rhodium(noun, element)
1
rubidium(noun, element)
1
ruthenium(noun, element)
1
samarium(noun, element)
1
scandium(noun, element)
1
selenium(noun, element)
1
sewer gas
1
silicon(noun, element)
1
sodium(noun, element)
1
strontium(noun, element)
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APASmart Define. (2016). oxygen thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/oxygen/thesaurus/synonyms
ChicagoSmart Define. 2016. "oxygen thesaurus" https://smartdefine.org/oxygen/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, oxygen thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/oxygen/thesaurus/synonyms>.
MLASmart Define. "oxygen thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/oxygen/thesaurus/synonyms>