Essay (8)
'essay' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for thesis that I've seen before include "student's work" , "Researched dissertation" , "research paper" , "Analytical essay written for university degree" , "Lengthy written essay for university degree" .)
'essay' is the definition.
(paper is a kind of essay)
This is all the clue.
(Other definitions for paper that I've seen before include "Maybe Times" , "Thin material used for writing, wrapping etc" , "Writing sheet(s)?" , "Alternative to scissors or stone?" , "Material made from wood pulp, say" .)
'essay' is the definition.
(composition is a kind of essay)
This is all the clue.
(Other definitions for composition that I've seen before include "Musical work" , "story, perhaps?" , "Action of writing music" , "Make-up - essay" , "Ingredients" .)
'essay' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for treatise that I've seen before include "Iterates in essay" , "formal document" , "Learned paper" , "Written work dealing with one subject" , "A written work about treaties" .)