Could not find ὀκταέδρου in Logeion dictionaries.
ὀκταέδρου
Noun: neuter genitive singular of
ὀκτάεδρον
ὀκταέδρου
Adjective: masculine genitive singular, Adjective: feminine genitive singular, Adjective: neuter genitive singular of
ὀκτάεδρος
See ὀκταέδρου in Morpho