Article, good, in temporary accommodation — touching (7)
I believe the answer is:
tangent
'touching' is the definition.
(a tangent touches on a circle)
'article good in temporary accommodation' is the wordplay.
'article' becomes 'an' (English indefinite article).
'good' becomes 'g' (abbreviation).
'in' means one lot of letters goes inside another.
'temporary accommodation' becomes 'tent' (people stay in a tent temporarily).
'an'+'g'='ang'
'ang' put within 'tent' is 'TANGENT'.
(Other definitions for tangent that I've seen before include "What people often go off at!" , "mathematician's line" , "Particular line" , "Geometric line" , "Trig ratio" .)