hexad

American  

[hek-sad] / ˈhɛk sæd /

noun

1. the number six.

2. a group or series of six.

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hexad British  

/ ˈhɛksæd /

noun

1. a group or series of six

2. the number or sum of six

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Other Word Forms

• hexadic adjective

Etymology

Origin of hexad

1650–60; < Late Latin hexad- (stem of hexas ) < Greek hexad- (stem of hexás ) unit of six, equivalent to héx six + -ad- -ad ¹

Example Sentences

“We are going to strive for the perception of the qualities and wholes of the triads and hexads in the event of musical performances.’

From The New Yorker

This is the hexad axis or hexagonal axis, for which the angle of rotation is 60�, or one-sixth of 360�.

From Project Gutenberg

In this type of symmetry, of which apatite is the best example, there is only one plane of symmetry, which is perpendicular to the hexad axis.

From Project Gutenberg

An element having a valence of one is a monad; of two, a dyad; three, a triad; four, tetrad; five, pentad; six, hexad, etc.

From Project Gutenberg

Those with a triad axis are grouped together in the rhombohedral or trigonal division, and those with a hexad axis in the hexagonal division.

From Project Gutenberg