9 Letter Countable Nouns Starting with OCT

Browse 10 valid English 9 letter countable nouns that start with OCT, from Octothorp, Octillion, Octennial, Octoploid, Octameter, Octopodan and Octastyle 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 OCTA4 words
octameter
octastyle
octastich
octachord
Starts with OCTE
1 words
octennial
Starts with OCTI
1 words
octillion
Starts with OCTO4 words
octothorp
octoploid
octopodan
octostyle

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