saltation

名词 saltation:

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
   同义词：leap, jump
4. taking a series of rhythmical steps (and movements) in time to music
   同义词：dancing, dance, terpsichore
5. a light, self-propelled movement upwards or forwards
   同义词：leap, leaping, spring, bound, bounce