| Noun | 1. | octet - the cardinal number that is the sum of seven and onedigit, figure - one of the elements that collectively form a system of numbers; "0 and 1 are digits" | |
| 2. | octet - eight performers or singers who perform together | |
| 3. | octet - a set of eight similar things considered as a unitset - a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth" | |
| 4. | octet - eight people considered as a unit | |
| 5. | octet - a musical composition written for eight performers | |