Terpsichore (Τερψιχόρη) combines the Greek terpein (to delight) and khoros (dance) — meaning "delight in dancing." The Greek muse of dance, daughter of Zeus and Mnemosyne. "Terpsichorean" remains an English adjective for "relating to dance."
Terpsichore is rare but iconic.
Terpsichore reduces to three — the number of Greek dance.