Impenetrable crystal Synonyms

Definitions for Impenetrable


  • (adjective) impossible to get through or into
  • (adjective) being beyond one's powers to know, understand, or explain
  • (adjective) impossible to understand

Definitions for Crystal


  • (adjective) easily seen through
  • (noun) a solid formed by the solidification of a chemical and having a highly regular atomic structure
  • (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces