24. Are there unistable polyhedra with less than 19 faces? / A unistable polyhedron is one which when made of material of uniform density, will rest in stable equilibrium on only one of its faces.
Source: wiktionary
Unistable
Synonyms for "unistable"
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Sample sentences
3 total sentences available.
There are two basic types of amorphous materials—the unistable and the bistable. The unistable material is one in which there are no structural changes. […] The mechanisms for carrier control in the unistable materials are electronic.
Source: wiktionary
(b) What is the least dimension, if any, in which a simplex can be unistable? If the condition of uniform density of material is relaxed, then a simplex can be unistable in 3 dimensions.
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.