PLAGIOCLASE /ˈpleɪdʒɪəkleɪz/ Scrabble 16 Words With Friends 21 Definition noun any of a series of triclinic feldspars that form rocks. — synonyms: oligoclase See all 515 words you can make from PLAGIOCLASE → 11-letter words Words starting with P Words ending with E ← Unscramble different letters