saltation (
http://definr.com/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: a light springing movement upwards or forwards [syn:
leap,
leaping,
spring,
bound,
bounce]