octad

• Nom désignant un groupe ou un ensemble de huit éléments, ou le nombre huit en tant que tel.

A noun referring to a group or set of eight, or the cardinal number that is the sum of seven and one.

1. Group of eightC1formal

   A set or collection of eight things or people.

   Groupe de huit

   • The octad of musicians performed a complex symphony.
   • In chemistry, an octad refers to a group of eight atoms.
   • The octad of planets in our solar system was once a common classification.

   Synonymeseightsomeoctetogdoad

2. The number eightC1formal

   The cardinal number that is the sum of seven and one.

   Le nombre huit

   • An octad is equivalent to two tetrads.
   • The ancient Greeks considered the octad a symbol of harmony.
   • The octad is the base of the octal number system.

   Synonymeseightoctet