elephant's toothpaste
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English
[edit]Alternative forms
[edit]Etymology
[edit]The foamy texture and size of the resulting mass suggest a large amount of toothpaste, as might be imagined to be used by a large creature like an elephant.
Noun
[edit]elephant's toothpaste (uncountable)
- A foamy substance caused by the rapid decomposition of hydrogen peroxide using potassium iodide as a catalyst; the outcome of a popular educational experiment in chemistry.