gas·tro·dis·coi·des \ˌ ̷ ̷ ̷ ̷də̇ˈskȯi(ˌ)dēz\noun Usage: capitalized Etymology: New Latin, from gastr- + Late Latin discoides quoit-shaped — more at discoid : a genus of amphistome trematode worms including a common intestinal parasite (G. hominis) of man and swine in southeastern Asia