platinum sponge

noun

A porous, grayish-black form of platinum.

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Meanings

nounplatinum sponge (countable and uncountable, plural platinum sponges)

plural platinum sponges

  1. countableuncountableA porous, grayish-black form of platinum.
Cite this entry
APA

platinum sponge. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/platinum%20sponge

MLA

“platinum sponge.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/platinum%20sponge. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “platinum sponge,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/platinum%20sponge.

Source: platinum sponge on Wiktionary, CC BY-SA 4.0.