Definition of "octad" [oc•tad]

• A group or sequence of eight. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The HD line-up on UPC today consists of octad channels, with National Ge"
• "Elkor's eyes ran over the ten octad or so ships of his fleet."
• "Then, most octad months ago, I started actually pitching in my nous variety of what I'd do, but we don't poverty to go backwards in without story."