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Definition of octet

octet

/ɑːkˈtɛt/
oc · tet

Plural:octets
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octet Lexical Profile

octet Game Scores & Validity

• noun

1

A musical ensemble of eight singers or instrumentalists, or a composition written for such a group.

Example

"The chamber music festival opened with a lively performance of Mendelssohn's string octet."


2

In chemistry, a stable group of eight valence electrons occupying the outer shell of an atom.

Example

"Noble gases are chemically unreactive primarily because their atoms already possess a complete outer octet of electrons."


3

The first eight lines of a sonnet, or a stanza consisting of eight lines of verse.

Example

"In a traditional Petrarchan sonnet, the opening octet introduces a central question or problem that the sestet resolves."


4

In computing and telecommunications, a unit of digital information that consists of exactly eight bits.

Example

"Each section of an IPv4 network address is represented by an eight-bit octet ranging in value from zero to 255."

Synonyms
View all synonyms for octet

• Rhymes for octet

Word Origin & Etymology

Borrowed in the mid-19th century from Italian ottetto or German Oktett, formed from Latin octo ('eight') on the model of duet and quartet.

Cite this Entry


Wordmom. (2026). Definition of Octet. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/octet
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