What is the name of meteoroids which hit Moon, Mars, or pretty much anything that isn’t the Earth? A meteorite according to the Oxford English Dictionary is


  A piece of rock or metal that has fallen to the earth's surface from outer space as a meteor.


But, meteors impact other planets.  Are they still meteorites?  Or is there another word for them.  And, if they are still called meteorites, what is the threshold for an object to be impacted upon by a meteor or meteoroid in this case, and still have the meteoroid be called a meteorite.  Are meteoroids impacting Pluto or Pallas meteorites?

We expect the OED to be authoritative so I am just curious if they have let us down or if the clever space brains have a taxonomy to differentiate them.
Oxford English Dictionary is an authoritative source, but it's aimed at the general public. I think no astronomer will frown upon you when you're using the terms meteoroid and meteorite to describe a small body impacting another body in the solar system. As an example, Wikipedia doesn't impose the limitation that it must hit Earth:


  A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon.