Definition

A type of needle-like crystal found in some plants, often made of calcium oxalate, or a needle-shaped structure in sponges.

Example

The raphis crystals in the plant cells help to provide structural support.

Conversation

I was reading about different plants and came across the term raphis.

Oh, I've never heard of that before! What is it exactly?

It's a type of crystal found in the cells of many plants, kind of interesting, right?

Definitely! I love learning about unique plant structures.

Synonyms & Antonyms

Root Explanation

The word 'raphis' comes from Greek 'raphis' (ῥάφις), meaning a needle or a small pointed instrument. It refers specifically to a type of needle used in sewing or stitching.

Memory Tip

Think of a small 'needle' in Greek, which helps you remember that 'raphis' refers to a pointed instrument used for sewing.

Visually Confused Words