ˈthīˌ(y)ad, -_(y)əd noun
( plural thyiads -dz ; or thy·ia·des ˈthī(y)əˌdēz, thīˈīəˌd-)
Usage: usually capitalized
Etymology: Latin Thyiad-, Thyias, from Greek, from thyein to rage, seethe; akin to Greek thymos spirit, mind, courage — more at fume
: a member of a group of ancient Greek women devoted to the orgiastic worship of Dionysus especially as practiced on Mount Parnassus