phenocrystic


phe·no·cryst

P0240400 (fē′nə-krĭst′)n. A conspicuous, usually large, crystal embedded in porphyritic igneous rock.
[pheno- + cryst(al).]
phe′no·crys′tic adj.

phenocrystic

(ˌfiːnəˈkrɪstɪk) adj (Geological Science) relating to a phenocryst