tetrahedral
Definition
Adjective - Having four faces: In geometry, "tetrahedral" describes a solid figure or shape that has four faces, specifically a tetrahedron, which is a type of pyramid with a triangular base. - Related to a tetrahedron: Pertaining to or characteristic of a tetrahedron, such as its structure, angles, or properties.
Usage Examples
- (The molecule is arranged like a tetrahedron, with four vertices.)
- (The crystal's structure exhibited the properties of a tetrahedron.)
- (The point's position was defined relative to a tetrahedron's geometry.)
Advanced Usage
- "Tetrahedral number": A number that can be represented as a three-dimensional pyramid with a triangular base, formed by stacking spheres.
- The fifth tetrahedral number is 35, representing 35 spheres in a tetrahedral arrangement. (A specific mathematical sequence.)
- "Tetrahedral bond angle": The angle between two bonds in a tetrahedral molecule, approximately 109.5 degrees.
- In methane, the tetrahedral bond angle is 109.5°, giving the molecule its stable shape. (A key concept in chemistry.)
Variants and Related Words
- Tetrahedron (noun): A solid figure with four triangular faces.
- A tetrahedron is the simplest of all convex polyhedra. (A geometric shape with four faces.)
- Tetrahedrally (adverb): In a manner that is like or relates to a tetrahedron.
- The atoms are arranged tetrahedrally around the central atom. (Arranged in a tetrahedral pattern.)
Synonyms
- Four-faced: Having four surfaces or sides (often used in geometry).
- Pyramidal: Shaped like a pyramid, though a tetrahedron is a specific type of pyramid with a triangular base.
Related Idioms
- "Tetrahedral void": In crystallography, a space between atoms arranged in a tetrahedral pattern.
- The metal atoms fill the tetrahedral voids in the crystal lattice. (A gap in the structure with tetrahedral geometry.)