Octad
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Octad ('group of 8') or octade may refer to:
- Octad (chord), octachord in music theory
- Octad (computing), a group of 8 bits in computing
- Octad (biology), an ascus containing eight ascospores
See also[edit]
- Heptad (disambiguation) ('group of 7')
- Ennead (disambiguation) ('group of 9')