ATOMIC NUMBER 18 as NOUN

1. Meaning
   • a colorless and odorless inert gas
   • one of the six inert gases
   • comprises approximately 1% of the earth’’s atmosphere
   Synonym(s)
   • Ar (what does Ar mean?)
   • argon (what does argon mean?)
   Hypernyms(s) atomic number 18 is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • chemical element (what does chemical element mean?)
   • element (what does element mean?)
   • noble gas (what does noble gas mean?)
   • inert gas (what does inert gas mean?)
   • argonon (what does argonon mean?)