Term expressing quality of article found in English mine (7)
I believe the answer is:
epithet
'term' is the definition.
(I have seen 'Descriptive term ' mean 'epithet' so perhaps 'term' could also mean 'epithet')
'article found in english mine' is the wordplay.
'article' becomes 'the' (the definite article).
'found in' is an insertion indicator.
'english' becomes 'E' (abbreviation).
'mine' becomes 'pit' (as in a mining pit).
'e'+'pit'='epit'
'the' going within 'epit' is 'EPITHET'.
'expressing quality of' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for epithet that I've seen before include "qualifier" , "Descriptive term used to express a real quality" , "Appellation" , "The 23: an -- for Richard I" , "Adjective expressing some quality of a person" .)