Definition

Describing a type of fish that does not have a lower jaw.

Example

The agnathan species are fascinating due to their unique anatomical features.

Conversation

Did you know that some fish are called agnathan because they don’t have a lower jaw?

Really? That sounds pretty unusual for a fish.

Yeah, they have a unique way of feeding without it, too.

I guess nature finds a way to adapt, even for agnathan species!

Synonyms & Antonyms

Root Explanation

Agnathan is formed from "a-" (meaning without) and "gnathos" (from Greek, meaning jaw). The term refers to a group of fish that lack jaws, hence the name agnathan, meaning without jaws.

Memory Tip

Think of 'without' ('a-') and 'jaw' ('gnathos') to remember that an agnathan is a creature that has no jaws.

Visually Confused Words