Is “Octet” a Scrabble word?
Yes
OCTET
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Octet
/ɒkˈtɛt/
noun
1.A group or set of eight of something.
2.A group of eight musicians performing together.
“An octet of waiters sang her "Happy Birthday".”
3.A composition for such a group of musicians.
Synonyms: byte, nundine, octad, octonary, octuplet, ogdoad