thīˈrīəsə̇s noun
( plural phthiria·ses -ˌsēz)
Etymology: Latin, pediculosis, from Greek phtheiriasis, from phtheir louse + -iasis; akin to Greek phtheirein to destroy, corrupt, defile, Sanskrit kṣarati it flows, perishes
: pediculosis ; especially : infestation with crab lice : pubic pediculosis