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Webster 1828 Edition

ppr.

Emitting in small particles; uttering rapidly and indistinctly; speaking hastily; spouting.

sputtering

sputtering ‎(plural sputterings)

A noise that sputters.
- 2009 April 11, Anthony Tommasini, “Moving on, a Music Director Leaves an Imprint, and a New Hall”, in New York Times:
  The women of the Los Angeles Master Chorale, seated in the rows where the first violins are typically located, contributed an array of haunting vocal sounds: hushed hums, sustained high tones, sputterings and more.
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.