[dahy-uh-rahyt] 
| a granular igneous rock consisting essentially of plagioclase feldspar and hornblende. |
| di·o·rite (dī'ə-rīt') n. Any of various dark, granite-textured, crystalline rocks rich in plagioclase and having little quartz. [French, from Greek diorizein, to distinguish : dia-, apart, between; see dia- + horizein, to divide, limit; see horizon.] di'o·rit'ic (-rĭt'ĭk) adj. |
| diorite (dī'ə-rīt') Pronunciation Key
A gray, coarse-grained plutonic rock. Diorite consists mainly of sodium-rich plagioclase and one or more mafic minerals such as biotite, hornblende, or pyroxene. It is the coarse-grained equivalent of andesite. |
əˌraɪt