Pronunciation guide
A pronunciation guide was a document that described how to pronounce words in a language.
In 2152, Jonathan Archer requested Hoshi Sato's aid in pronouncing the Kreetassan language, saying the pronunciation guide he'd been given didn't make sense. (ENT: "A Night In Sickbay")
An example of a pronunciation guide included with the script of TNG: "The Vengeance Factor"