Parnassos. Parnassos (Greek). Parnassus (Latin). A mountain near Delphi, in Greece. It was well wooded; at its foot grew myrtle, laurel and olive trees, and higher up firs; and its summit was covered with snow during the greater part of the year. It contained numerous caves, glens, and romantic ravines. It has two summits, one of which was consecrated to Apollo and the Muses, the other to Bacchus. It was anciently called Larnassos, from larnax, an ark, because Deucalion's ark stranded there after the flood. After the oracle of Delphi was built at its foot it received the name of Parnassos. It is celebrated as one of the chief seats of Apollo and the Muses, and an inspiring source of poetry and song.