The story
- Ancient Greekκᾰλός (kălós)
- Ancient Greekκάλλος (kállos)
- Ancient Greekσθένος (sthénos)
- English todaycalisthenics
From Ancient Greek κάλλος (kállos, “beauty”) + σθένος (sthénos, “strength”) + English -ics.
Etymology from Wiktionary, CC BY-SA 4.0.