Yahoo奇摩字典 網頁搜尋

搜尋結果

1. Oxford American Dictionary

   porphyroblast

   • IPA[ˈpôrfərōˌblast]

   美式

   • n.
     a larger recrystallized grain occurring in a finer groundmass in a metamorphic rock.

   • noun: porphyroblast, plural noun: porphyroblasts