Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of dyas is as below...

Syne :: Syndyasmian (a.) Pertaining to the state of pairing together sexually; -- said of animals during periods of procreation and while rearing their offspring.

Zechstein :: Zechstein (n.) The upper division of the Permian (Dyas) of Europe. The prevailing rock is a magnesian limestone.

Dyas :: Dyas (n.) A name applied in Germany to the Permian formation, there consisting of two principal groups..

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