octahedron
(noun) any polyhedron having eight plane faces
Source: WordNet® 3.1
octahedron (plural octahedra or octahedrons)
(geometry) a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids.
Source: Wiktionary
Oc`ta*he"dron, n. Etym: [Gr. (Geom.)
Definition: A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.
Source: Webster’s Unabridged Dictionary 1913 Edition
10 June 2025
(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
