Definition

A type of marine animal that has a symmetrical body and a hard internal skeleton, including creatures like starfish and sea urchins.

Example

The echinoderm is known for its unique ability to regenerate lost limbs.

Conversation

Have you ever seen an echinoderm up close?

No, I haven't! What are they like?

They're fascinating creatures, especially the sea urchins with their spines.

That sounds cool! I’d love to check them out sometime.

Synonyms & Antonyms

Root Explanation

Echinoderm → It is formed from "echinos" (from Greek, meaning spiny or hedgehog) and "derma" (from Greek, meaning skin). The word "echinoderm" refers to animals with spiny skin, such as starfish and sea urchins.

Memory Tip

Imagine a creature with 'spiny' skin, like a hedgehog — that's what 'echinoderm' means, combining 'echinos' for spiny and 'derma' for skin.

Visually Confused Words