Definition

A central stem or axis in plants, such as the main part of a feather or the stalk of a compound leaf that holds the smaller leaflets.

Example

The rachis of the feather is important for its structure and function in flight.

Conversation

Have you ever noticed the rachis on a feather before?

Yeah, it’s interesting how it holds everything together.

I read that the rachis can be quite strong despite being so thin.

Exactly! It's amazing how nature works like that.

Synonyms & Antonyms

Root Explanation

Rachis → It originates from the Greek word "ῥάχις" (rhachis), meaning spine or backbone. The term refers to the central axis of a structure, particularly in botany where it denotes the main stem of a compound leaf or the spine of an animal.

Memory Tip

Think of the Greek word for spine ('ῥάχις') to remember that 'rachis' refers to the central axis or backbone of a structure.

Visually Confused Words