saltation
     n 1: (geology) the leaping movement of sand or soil particles as
          they are transported in a fluid medium over an uneven
          surface
     2: a mutation that drastically changes the phenotype of an
        organism or species
     3: an abrupt transition; "a successful leap from college to the
        major leagues" [syn: {leap}, {jump}]
     4: taking a series of rhythmical steps (and movements) in time
        to music [syn: {dancing}, {dance}, {terpsichore}]
     5: a light springing movement upwards or forwards [syn: {leap},
         {leaping}, {spring}, {bound}, {bounce}]
Source: WordNet® 2.0