hexad

[ hek-sad ]

noun

1. the number six.
2. a group or series of six.

hexad

/ ˈhɛksæd /

noun

1. a group or series of six
2. the number or sum of six

Derived Forms

• hexˈadic, adjective

Other Words From

• hex·adic adjective

Word History and Origins

Origin of hexad¹

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

Word History and Origins

Origin of hexad¹

C17: from Greek hexas, from hex six

Example Sentences

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

From Project Gutenberg

Perpendicular to the hexad axis are six dyad axes of two kinds and each perpendicular to a vertical plane of symmetry.

From Project Gutenberg

In crystals of this division of the hexagonal system the principal axis is a hexad axis of symmetry.

From Project Gutenberg

Here there is a plane of symmetry perpendicular to the hexad axis; there is also a centre of symmetry.

From Project Gutenberg

The hexad axis is uniterminal and all the forms are open forms.

From Project Gutenberg