Parent met me. Strange disposition! (11)
I believe the answer is:
temperament
'disposition' is the definition.
(I know that disposition can be written as temperament)
'parent met me strange' is the wordplay.
'strange' is an anagram indicator.
'parent'+'met'+'me'='parentmetme'
'parentmetme' with letters rearranged gives 'TEMPERAMENT'.
(Other definitions for temperament that I've seen before include "A person's nature as it affects behaviour" , "Person's nature; adjustment in piano tuning" , "Frame of mind" , "Personality" , "Disposition; tuning adjustment" .)