an·de·site 
(ăndĭ-zīt′)
(ăndĭ-zīt′)n.
A gray, fine-grained volcanic rock consisting chiefly of plagioclase feldspar and one or more mafic minerals.
[After the Andes.]
- Ostend
- ostensible
- ostensibly
- ostensive
- ostensively
- ostensorium
- ostensory
- ostentation
- ostentatious
- ostentatiously
- osteo-
- osteoarthritic
- osteoarthritis
- osteoblast
- osteoblastic
- osteocalcin
- osteoclasis
- osteoclast
- osteoclastic
- osteocyte
- osteogenesis
- osteogenesis imperfecta
- osteogenetic
- osteogenic
- osteogenic sarcoma