Fond of a harmonic (7)
I believe the answer is:
partial
I believe this is a double definition.
'fond of' is the first definition.
(I've seen this before)
'a harmonic' is the second definition.
(I know that harmonic can be written as partial)
(Other definitions for partial that I've seen before include "Fragmentary" , "One-sided" , "Prejudiced - incomplete" , "Not complete or total, maybe an eclipse" , "Favouring one over another" .)