Foreign animal fur processed with Iodine (10)
I believe the answer is:
unfamiliar
'foreign' is the definition.
(thesaurus)
'animal fur processed with iodine' is the wordplay.
'processed with' indicates anagramming the letters.
'iodine' becomes 'i' (I is the chemical symbol for iodine).
'animal'+'fur'='animalfur'
'animalfur' anagrammed with 'i' gives 'UNFAMILIAR'.
(Other definitions for unfamiliar that I've seen before include "Strange" , "Unknown" , "Not recognised" , "novel" .)