icosahedron

play
noun ico·sa·he·dron \(ˌ)ī-ˌkō-sə-ˈhē-drən, -ˌkä-\

Definition of icosahedron

plural

icosahedrons

or

icosahedra

play \(ˌ)ī-ˌkō-sə-ˈhē-drə, -ˌkä-\
  1. :  a polyhedron having 20 faces

Origin and Etymology of icosahedron

Greek eikosaedron, from eikosi twenty + -edron -hedron — more at vigesimal


First Known Use: 1570


Learn More about icosahedron


Seen and Heard

What made you want to look up icosahedron? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a lively discussion

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!