octad
/'ɔktæd/
Definition
- Noun:
- A group or set of eight: "octad" refers to a collection of eight things considered as a single unit.
- The cardinal number eight: "octad" can denote the number eight itself.
Usage
- "Octad" is a formal or technical term, often used in scientific, mathematical, or literary contexts to describe a set of eight. It is less common in everyday speech than the word "eight."
Examples
- Noun:
- The ancient philosopher believed the universe was governed by a sacred octad of principles.
- In chemistry, an octad of electrons completes the outer shell of a noble gas atom.
Advanced Usage
- "To form an octad": to come together as a group of eight.
- The rebel factions agreed to form an octad to present a unified front.
Variants and Related Words
- Octet (n): a group of eight people or things, especially musicians.
- The jazz octet performed a brilliant set.
- Octonary (adj): relating to or based on the number eight.
- Octave (n): a series of eight musical notes; a difference of eight in pitch.
Synonyms
- Eight: the cardinal number.
- Octet: a group of eight.
- Ogdoad: (formal) a group of eight.
Antonyms
- Monad: a single unit; one.
- Dyad: a pair; two.
Noun
-
the cardinal number that is the sum of seven and one
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