Definition

A protective cap or hood that covers the spore case of certain plants, especially mosses.

Example

The calyptra protects the developing spores inside the moss capsule.

Conversation

Have you ever looked closely at a moss?

Not really, why do you ask?

I just learned that it has a calyptra that covers its spore case.

That's interesting! I had no idea plants had such cool structures.

Synonyms & Antonyms

Root Explanation

Calyptra is derived from the Greek word "kaluptra" (καλύπτρα), meaning a covering or veil. The term refers to a cap-like structure that covers the spore-producing part of certain plants, particularly mosses.

Memory Tip

Imagine a 'covering' or 'veil' — that's what 'calyptra' means, as it refers to a cap that covers something.

Visually Confused Words