To emit saliva or spit from the mouth in small, scattered portions, as in rapid speaking.

To speak so rapidly as to emit saliva; to utter words hastily and indistinctly, with a spluttering sound, as in rage.

To throw out anything, as little jets of steam, with a noise like that made by one sputtering.

A noise that sputters.

The ejection of atoms from the surface of a solid or liquid following bombardment with ions, atoms or molecules; used to prepare a thin layer of material on an object.