Definition

Relating to animals like crabs and lobsters that have a hard outer shell.

Example

The crustaceous creatures scuttled across the sandy beach.

Conversation

Did you know that some of the most interesting animals are crustaceous?

Really? Like what?

I mean, think about crabs and lobsters; they have such unique features.

That's true! I love how their crustaceous shells protect them.

Synonyms & Antonyms

Root Explanation

Crustaceous → It is formed from "crusta" (meaning shell or crust) and the suffix "-aceous" (meaning having the nature of). The word "crustaceous" refers to organisms that have a shell or crust-like exterior, typically used to describe certain types of marine animals such as crabs and lobsters.

Memory Tip

Think of 'crust' as a shell and '-aceous' meaning having the nature of — so crustaceous describes creatures that have a shell-like nature.

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