Sticking (8)
'sticking' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for adhesion that I've seen before include "Adonis, he may be a sticker" , "Process of sticking together" , "The property of sticking" , "strong attachment" , "Grip" .)
'sticking' is the definition.
('adhere' can be a synonym of 'stick')
This is all the clue.
(Other definitions for adhering that I've seen before include "holding fast" , "Sticking" .)