One of the mysteries of the English language finally explained.
A group or set of six.
- ‘The duodecad can be considered as two hexads, upper and lower; as three tetrads, working in dynamic cooperation; or as four triads in a synthesis of immanence and transcendence.’
- ‘These axes are, respectively, diads, triads, tetrads, and hexads.’
- ‘Unfortunately there are not hexads or octads in nature.’
- ‘Two lyre-like instruments, Kitharas I & II, date from 1938 and have twelve hexads per instrument.’
Mid 17th century (denoting a series of six numbers): from Greek hexas, hexad-, from hex ‘six’.
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