Miracidium vs. Coracidium

Miracidiumnoun

(biology) A free-living motile form of a trematode, covered with cilia, which settles in a mollusc intermediate host to become a sporocyst

Coracidiumnoun

(biology) The larval stage of some tapeworms

Miracidium

The Miracidium is the second stage in the life cycle of trematodes. When trematode eggs are laid and come into contact with fresh water, they hatch and release miracidium.