xenoblast

noun
xen·o·blast | \ ˈzenəˌblast \

Definition of xenoblast 

: a crystal in metamorphic rock that is not bounded by its own faces but has its outlines impressed upon it by neighboring crystals contrasted with idioblast

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Other words from xenoblast

xenoblastic \¦⸗⸗¦blastik \ adjective

History and Etymology for xenoblast

xen- + -blast

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