I’m wondering whether it might be helpful to alter your template so that the title includes the author or school of thought. If you were to be consistent with the naming such that the note is titled “term - author” then you could embed all of the notes defining the same term in a note named “term” to act as a compilation note. This way when you come across another definition of the term, You can simply use your template to create the “term - author” note then embed or link to it from the term note.
You could also look into the note composer plug-in or more complex Templater scripts. Check out this thread for some inspiration: Extract to specified heading with Note Composer While it might not be helpful for your specific use case, it might trigger an idea for you.
Good luck!