Countable Nouns Starting with OCT and Containing N

Browse 23 valid English countable nouns starting with OCT and containing N, from Octagon, Octane, Octogenarian, Octahedron, Octant, Octillion and Octoroon to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with OCTA9 words
octagon
octane
octahedron
octant
octanol
octangle
octakishexahedron
octastichon
octandrian
Starts with OCTE
1 words
octennial
Starts with OCTI4 words
octillion
octillionth
octingentenary
octingenary
Starts with OCTO9 words
octogenarian
octoroon
octonary
octopodan
octodecillion
octogenary
octocentenary
octonarius
octonarian

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