Where does “gyrolite” come from?

gyrolite (English) comes from English gyro-, from Ancient Greek γῦρος, from Ancient Greek μίτρα, from Proto-Indo-European mey- — to strengthen; to bind; to change, exchange.

gyrolite (English): A hexagonal-pyramidal mineral containing...

Definitions

A hexagonal-pyramidal mineral containing...

Ancestry of “gyrolite”, step by step

Step	Language	Word	Meaning
1	English	gyro-	circle; circular or spinning motion; gyrovector...
2	Ancient Greek	γῦρος	ring, circle
3	Ancient Greek	μίτρα	A metal guard worn round the waist; A maiden's...
4	Proto-Indo-European	mey-	to strengthen; to bind; to change, exchange

Every word from Proto-Indo-European mey- →Every word from Ancient Greek μίτρα →Every word from Ancient Greek γῦρος →