OCTA
OCTACHORD
OCTACHORDAL
OCTACHORDS
OCTAD
OCTADIC
OCTADS
OCTAGON
OCTAGONAL
OCTAGONALLY
OCTAGONS
OCTAHEDRA
OCTAHEDRAL
OCTAHEDRALLY
OCTAHEDRITE
OCTAHEDRITES
OCTAHEDRON
OCTAHEDRONS
OCTAL
OCTALS
OCTAMEROUS
OCTAMETER
OCTAMETERS
OCTAN
OCTANDRIAN
OCTANDROUS
OCTANE
OCTANEDIOIC
OCTANES
OCTANGLE
OCTANGLES
OCTANGULAR
OCTANOL
OCTANOLS
OCTANS
OCTANT
OCTANTAL
OCTANTS
OCTAPEPTIDE
OCTAPEPTIDES
OCTAPLA
OCTAPLAS
OCTAPLOID
OCTAPLOIDIES
OCTAPLOIDS
OCTAPLOIDY
OCTAPODIC
OCTAPODIES
OCTAPODY
OCTARCHIES
OCTARCHY
OCTAROON
OCTAROONS
OCTAS
OCTASTICH
OCTASTICHON
OCTASTICHONS
OCTASTICHOUS
OCTASTICHS
OCTASTROPHIC
OCTASTYLE
OCTASTYLES
OCTAVAL
OCTAVALENT
OCTAVE
OCTAVES
OCTAVO
OCTAVOS
OCTENNIAL
OCTENNIALLY
OCTET
OCTETS
OCTETT
OCTETTE
OCTETTES
OCTETTS
OCTILLION
OCTILLIONS
OCTILLIONTH
OCTILLIONTHS
OCTINGENARIES
OCTINGENARY
OCTINGENTENARY
OCTOCENTENARIES
OCTOCENTENARY
OCTODECILLION
OCTODECILLIONS
OCTODECIMO
OCTODECIMOS
OCTOFID
OCTOGENARIAN
OCTOGENARIANS
OCTOGENARIES
OCTOGENARY
OCTOGYNOUS
OCTOHEDRA
OCTOHEDRON
OCTOHEDRONS
OCTONARIAN
OCTONARIANS
OCTONARIES
OCTONARII
OCTONARIUS
OCTONARY
OCTONOCULAR
OCTOPETALOUS
OCTOPI
OCTOPLOID
OCTOPLOIDS
OCTOPOD
OCTOPODAN
OCTOPODANS
OCTOPODES
OCTOPODOUS
OCTOPODS
OCTOPUS
OCTOPUSES
OCTOPUSH
OCTOPUSHER
OCTOPUSHERS
OCTOPUSHES
OCTOROON
OCTOROONS
OCTOSEPALOUS
OCTOSTICHOUS
OCTOSTYLE
OCTOSTYLES
OCTOSYLLABIC
OCTOSYLLABICS
OCTOSYLLABLE
OCTOSYLLABLES
OCTOTHORP
OCTOTHORPS
OCTROI
OCTROIS
OCTUOR
OCTUORS
OCTUPLE
OCTUPLED
OCTUPLES
OCTUPLET
OCTUPLETS
OCTUPLEX
OCTUPLICATE
OCTUPLICATES
OCTUPLING
OCTUPLY
OCTYL
OCTYLS

149 words start with OCT.