octet Definition

octet
octette
noun

1. Any group of eight people or things.
2a. music.
A group of eight musicians or singers who perform together;
2b. music.
A piece of music written for eight instruments or voices.
3. poetry.
An octave 4.
4. chem.
A stable group of eight electrons.
5. nuclear physics.
A group of eight subatomic particles.

Etymology: 19c: from oct- (see under octo-) , modelled on duet, etc.