Definition

Describing a shape that has four triangular faces, like a pyramid with a triangular base.

Example

The scientist used a tetrahedral model to explain the molecular structure.

Conversation

Have you ever seen a model of a tetrahedral shape?

Yes, I think I made one in art class once.

They're so interesting because they have four faces.

Right! It’s cool how simple shapes can create such unique forms.

Synonyms & Antonyms

Root Explanation

Tetrahedral → It is formed from "tetra-" (from Greek "tetra", meaning four) and "hedra" (from Greek "hedra", meaning face or base). The word "tetrahedral" describes a three-dimensional shape that has four faces, specifically a tetrahedron.

Memory Tip

Think of 'four' ('tetra-') and 'faces' ('hedra') to remember that a tetrahedral shape has four triangular faces.

Visually Confused Words