oligoclase oligochylia • oligoclasite · · · Info · Definitions · Synonyms · Characters · · oligoclase · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) any of a series of triclinic feldspars that form rocks. Synonyms: plagioclase. · · Noun Definition 1 Synonyms · · · plagioclase · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F s latin small letter s U+0073