gneissoid


From The Collaborative International Dictionary of English v.0.48:

Gneissoid \Gneis"soid\ (-soid), a. [Gneiss + -oid.]
   Resembling gneiss; having some of the characteristics of
   gneiss; -- applied to rocks of an intermediate character
   between granite and gneiss, or mica slate and gneiss.
   [1913 Webster]
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