Where does “gyrotropy” come from?

gyrotropy (English) comes from English gyro, from English gyroscope, from French gyroscope, from Ancient Greek σκοπός, from Ancient Greek σκέπτομαι, from Proto-Hellenic sképťomai, from Proto-Indo-European spéḱyeti, from Proto-Indo-European speḱ- — to see, to look, to observe.

gyrotropy (English): The helical movement of electromagnetic radiation...

Definitions

  1. The helical movement of electromagnetic radiation...

Ancestry of “gyrotropy”, step by step

gyrotropy traces back through two separate lines of ancestry.

via English gyro

StepLanguageWordMeaning
1EnglishgyroA gyroscope; A gyrocompass; An autogyro
2Englishgyroscopean apparatus composed of a wheel which spins...
3Frenchgyroscopegyroscope
4Ancient Greekσκοπόςwatcher, lookout; protector, guardian; spy, scout
5Ancient GreekσκέπτομαιI look at, examine; I examine, consider, think
6Proto-Hellenicsképťomaito look at
7Proto-Indo-Europeanspéḱyetito be looking at, to keep looking at
8Proto-Indo-Europeanspeḱ-to see, to look, to observe

via English tropy

StepLanguageWordMeaning
1Englishtropy

Words derived from “gyrotropy

Every word from Proto-Indo-European speḱ-