
(from the article `flatworm`) In the life cycle of flukes of the subclass Digenea, mollusks serve as the intermediate host. Eggs of Digenea usually hatch in water or in a snail ...
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http://www.britannica.com/eb/a-z/m/98

The ciliated first-stage larva of a trematode that emerges from the egg and must penetrate into the tissues of an appropriate intermediate host snail if it is to continue its life cycle; followed by development into a mother sporocyst and by production of a number of offspring of successive larval generations. ... See: sporocyst. ... Origin: G. Mei...
Found on
http://www.encyclo.co.uk/local/20973

(mi-rә-sid´e-әm) the free-swimming larva of a parasitic fluke, which emerges from an egg and penetrates the body of a snail host.
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http://www.encyclo.co.uk/local/21001

The free swimming larva of a trematode which penetrates the body of its snail host and develops further to become a cercaria.
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http://www.encyclo.co.uk/visitor-contributions.php

Type: Term Pronunciation: mī′ră-sid′ē-ŭm, -ă Definitions: 1. The ciliated first-stage larva of a trematode that emerges from the egg and must penetrate into the tissues of an appropriate intermediate host snail if it is to continue its life cycle; followed by development into a mother sporocyst and by production...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=55531

Free-living larval form in the life cycle of flukes.
Found on
http://www.thehorse.com/Glossary.xhtml?L=M
No exact match found.