See post 17.
Word study Greek-English New Testament: a literal, interlinear word study of ... By Paul R. McReynolds defines it as including salt. https://books.google.com/books?id=orcMSVDBek4C&pg=PA424&lpg=PA424&dq=The+Greek+word+%CF%83%CF%85%CE%BD%CE%B1%CE%BB%CE%B9%CE%B6%CF%8C%CE%BC%CE%B5%CE%BD%CE%BF%CF%82&source=bl&ots=qm01EevsXu&sig=CeY_PV35BSa3yq-Pf7TQHN7dH-o&hl=en&sa=X&ei=fZQuVYDbDMyNsAWgn4DwAg&ved=0CCoQ6AEwAg#v=onepage&q=The%20Greek%20word%20%CF%83%CF%85%CE%BD%CE%B1%CE%BB%CE%B9%CE%B6%CF%8C%CE%BC%CE%B5%CE%BD%CE%BF%CF%82&f=false