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anorthiticenUK
an·or·thite A0322200 (ăn-ôr′thīt)n. A white to gray variety of plagioclase feldspar that contains a high proportion of calcium to sodium and occurs in alkaline igneous rocks such as gabbro and anorthosite. [From Greek an-, not; see a-1 + orthos, straight (from its oblique crystals).] an′or·thit′ic (-thĭt′ĭk) adj.ThesaurusAdj. | 1. | anorthitic - characteristic of anorthite | EncyclopediaSeeanorthite |