Definition

A free-swimming larval stage of certain parasitic flatworms, which seeks out a snail to enter and develop further.

Example

The miracidium swims through the water in search of a suitable snail host.

Conversation

Have you ever heard of a miracidium?

No, I haven't. What is it?

It's actually a type of larva that looks for snails to live in.

That's interesting! Nature has such unique life cycles.

Root Explanation

Miracidium is derived from the Greek root "mira" (meaning wonderful or amazing) and the suffix "-cidium" (from "cidium", meaning a small or diminutive form). The word refers to a small, amazing larval stage of certain parasitic flatworms, particularly trematodes, that is often found in water.

Memory Tip

Think of 'wonderful' ('mira') to remember that 'miracidium' refers to a small, amazing larval form of a parasite.

Visually Confused Words