collapsium

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noun

A fictional material usually described as having an extremely high density.

Scrabble 16
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Meanings

nouncollapsium (uncountable)
  1. uncountableliteratureA fictional material usually described as having an extremely high density.

Origin

From collapse + -ium. Probably alluding to black holes, which are extremely dense objects formed by collapsing matter in the core of a dying star.

Full word history & related roots →
Cite this entry
APA

collapsium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/collapsium

MLA

“collapsium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/collapsium. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “collapsium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/collapsium.

Source: collapsium on Wiktionary, CC BY-SA 4.0.