Where does “tysonite” come from?

tysonite (English) comes from English Tyson, from English Dennis, from Middle English Denis, from Old French Denis, from Latin Dionȳsius, from Ancient Greek Διονύσιος, from Ancient Greek -ῐος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

tysonite (English): A fluoride of the cerium metals occurring in pale...

Definitions

A fluoride of the cerium metals occurring in pale...

Ancestry of “tysonite”, step by step

Step	Language	Word	Meaning
1	English	Tyson	—
2	English	Dennis	—
3	Middle English	Denis	—
4	Old French	Denis	—
5	Latin	Dionȳsius	tyrant of Syracuse
6	Ancient Greek	Διονύσιος	—
7	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
8	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek Διονύσιος →