Where does “Pyrrhic” come from?

Pyrrhic (English) comes from Latin pyrrhichius, from Ancient Greek πυρρίχη, from Ancient Greek πυρρός, from Ancient Greek πῦρ, from Proto-Indo-European péh₂wr̥ — bonfire; spelt.

Pyrrhic (English): Of or relating to Pyrrhus (319/318–272), Greek general and statesman

Definitions

Of or relating to Pyrrhus (319/318–272), Greek general and statesman

Ancestry of “Pyrrhic”, step by step

Pyrrhic traces back through two separate lines of ancestry.

via Latin pyrrhichius

Step	Language	Word	Meaning
1	Latin	pyrrhichius	—
2	Ancient Greek	πυρρίχη	war dance
3	Ancient Greek	πυρρός	flame-coloured, yellowish-red; red-haired,...
4	Ancient Greek	πῦρ	a fire; lightning; a fever
5	Proto-Indo-European	péh₂wr̥	bonfire; spelt

via English Pyrrhus

Step	Language	Word	Meaning
1	English	Pyrrhus	Pyrrhus of Epirus, the king of Epirus (319–272) who defeated Romans in several battles, but sustained heavy losses (Pyrrhic victory)
2	Ancient Greek	Πύρρος	the Greek king of Epirus
3	Ancient Greek	πῠρρός	flame-colored, yellowish-red; red, fiery

Words derived from “Pyrrhic”

Every word from Proto-Indo-European péh₂wr̥ →Every word from Ancient Greek πῦρ →Every word from Ancient Greek πυρρός →