Definition

A bare area on a bird's skin where feathers do not grow, distinguishing it from areas covered with feathers.

Example

The apterium on the bird's wing was clearly visible, showing the unfeathered skin beneath.

Conversation

Did you know that birds have areas called apterium where they don't have feathers?

Really? I had no idea that was a specific term for that.

Yeah, it's interesting how it helps them regulate their body temperature.

That makes sense! Nature has a lot of cool adaptations.

Synonyms & Antonyms

Root Explanation

Apterium is derived from the Greek root "a-" (meaning without) and "pteron" (meaning wing). The term refers to a condition or state of being without wings, often used in biological contexts to describe certain species or anatomical features.

Memory Tip

Think of 'without' ('a-') and 'wing' ('pteron') to remember that 'apterium' refers to something that is without wings.

Visually Confused Words