Definition

A type of animal in which the mouth develops from the first opening in the embryo, including groups like mollusks and arthropods.

Example

Mollusks and arthropods are examples of protostomes.

Conversation

Have you ever heard of the term protostome?

Yeah, I think it refers to a group of animals, right?

Exactly! They include creatures like mollusks and arthropods.

That's really interesting! I love learning about different animal groups.

Synonyms & Antonyms

Root Explanation

Protostome → It is formed from "proto-" (from Greek "prōtos", meaning first) and "stoma" (from Greek "stoma", meaning mouth). The term refers to a group of animals whose mouth develops before their anus during embryonic development, hence the 'first mouth.'

Memory Tip

Think of 'first' ('proto-') and 'mouth' ('stoma') to remember that a protostome is an organism whose mouth forms first during development.

Visually Confused Words