καθήγησις
καθήγησις, rule, principle
Alas! Could not find the search term καθήγησις.
Found the closest form καθηγήσαιτʼ. Other nearby forms can be found in the wordwheel, or perhaps try searching again without accents.
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
aorist middle optative 3rd singular of καθηγέομαι
No checked forms of καθήγησις in the morphology database.