eka-radon
The unstable, radioactive, chemical element with atomic number 118, now named oganessonThe unstable, radioactive, chemical element with atomic number 118, now named oganesson.
Meaning
1 senses(dated, uncountable)The unstable, radioactive, chemical element with atomic number 118, now named oganesson.
Origin
From eka- + radon.From eka- + radon.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable