�������t¶��

The combining form -hedron is used like a suffix meaning “face.” It is often used in geometry to name solid geometric figures.

The form -hedron comes from Greek -edron, meaning “having bases,” which is based on hé���ā, meaning “seat” or “face of a geometrical form.”

What are variants of -hedron?

While -hedron doesn’t have any variants, it is related to the form -hedral, which is used to form adjectives related to nouns ending in -hedron, such as trihedral. Want to know more? Read our �������t¶��s That Use article about -hedral.

One example of a term from geometry that uses the form -hedron is trihedron, “the figure determined by three planes meeting in a point.”

The form tri- means “three,” as you may have guessed. We already know that the suffix -hedron means “face.” Trihedron literally translates to “three faces.”

What are some words that use the combining form -hedron?

• decahedron
• icosahedron (using the equivalent form of -hedron in Greek)
• octahedron (using the equivalent form of -hedron in Greek)
• polyhedron (using the equivalent form of -hedron in Greek)
• scalenohedron
• tetrahedron

What are some other forms that -hedron may be commonly confused with?

• -drome
• -tron

The combining form deca- means “ten.” With this in mind, what does decahedron literally mean?