collapsium
A fictional material usually described as having an extremely high densityA fictional material usually described as having an extremely high density.
Meaning
1 senses(uncountable)A fictional material usually described as having an extremely high density.
Origin
From collapse + -ium. Probably alluding to black holes, which are extremely dense objectsFrom collapse + -ium. Probably alluding to black holes, which are extremely dense objects formed by collapsing matter in the core of a dying star.
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Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable