Αὐτοκρατορίδα
αὐτοκρατορίς, the residence of a sovereign
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
Proper-name noun feminine accusative singular (cp Αὐτοκρατορίς) of αὐτοκρατορίς
No checked forms of αὐτοκρατορίς in the morphology database.