General: A group or series of eight. Chemistry:
A stable group of eight electrons which constitutes the outer electron
shell of an atom of an inert gas (except helium whose only electron shell contains two electrons).
From → oct-, octa- + -et, as in duet.
Haštâyé, from haštâ "eightfold" + (y)é nuance suffix,
as in dotâyé, → doublet.
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