Divorcee may go elsewhere, marrying a foreigner (7)
I believe the answer is:
exogamy
'marrying a foreigner' is the definition.
I can't tell whether this defines the answer.
'divorcee may go elsewhere' is the wordplay.
'divorcee' becomes 'ex' (an ex-spouse).
'elsewhere' indicates an anagram (I've seen this in other clues).
'may'+'go'='maygo'
'maygo' anagrammed gives 'ogamy'.
'ex'+'ogamy'='EXOGAMY'
Can you help me to learn more?
(Other definitions for exogamy that I've seen before include "Marriage outside tribe" , "Custom of marrying outside the group" , "Custom of marring outside the tribe" .)