A really quick tip for anyone studying at University who may be struggling with the sort of academic writing style that you need to master to get the top marks in yours essays. If that sounds familiar, have a look at the Academic Phrasebank set up by John Morley at the University of Manchester. This offers a wealth of support with academic writing by providing sample phrases to use, along with advice on what to include in the different sections of your writing (introductions, conclusions etc).
So, not sure about how to define one the key terms in your essay? How about ‘The term ‘X’ was introduced by Smith in her …‘ or ‘Historically, the term ‘X’ has been used to describe …‘ or ‘It is necessary here to clarify exactly what is meant by …‘
These are just a tiny example of hundreds of phrases you can use and adapt to suit your need. And, no need to worry about plagiarism – as the site explains; ‘The items in the Academic Phrasebank are mostly content neutral and generic in nature; in using them, therefore, you are not stealing other people’s ideas and this does not constitute plagiarism.’