To most of my research so far, it is the visual of speech sounds. When you look through a dictionary, you'll usually see these things under the main word you're looking for.
For example, you take a word like "Seahorse". You have the word type, and below the word type, you see some fancy looking text.
I will bold this mini dictionary bit for you to show you what we're focusing on.
Seahorse
Noun
/ˈsēhôrs/
The text in bold here is what you're looking for when you want to find the "Phonetic Transcription." Hope this helps!
Because girls get crushes on cute teacher
The a long question wow I don’t know
Six million Jews<span>
Six million Jews died in the Holocaust. Jewish communities across Europe were shattered. Many of those who survived were determined to leave Europe and start new lives in Israel or the United States. Most of these Jews were killed by the Germans because Hitler believed the Jews were the cause of Germany's economic problems. He employed mass killings and created concentration camps in which they would be killed.</span>