Nouns That Start with OCTO

Find 23 valid English nouns starting with OCTO, including Octopus, Octogenarian, Octothorp, Octocopter, Octothorpe, Octoroon and Octopod. Check definitions and usage below, or visit our noun grammar guide to review pluralization and capitalization rules.

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Starts with OCTOC2 words
octocopter
octocentenary
Starts with OCTOD2 words
octodecimo
octodecillion
Starts with OCTOF1 words
octofoil
Starts with OCTOG2 words
octogenarian
octogenary
Starts with OCTON3 words
octonary
octonarius
octonarian
Starts with OCTOP7 words
octopus
octopod
octopamine
octopoid
octoploid
octopodan
octopusher
Starts with OCTOR1 words
octoroon
Starts with OCTOS3 words
octosyllabic
octosyllable
octostyle
Starts with OCTOT2 words
octothorp
octothorpe

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