oct- — eight (affix)

oct- eight

Component prefix

Greek/Latin · 'Eight' (octagon, octopus, October — the old eighth month).

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Used in (3)

/ˈɑktəpʊs/ a soft-bodied sea animal with eight sucker-bearing arms M S

/ˈɑktɪv/ An interval of twelve semitones spanning eight degrees of the diatonic scale, representing a doubling or halving in pitch frequency. M S

/ˈɑːk.təˌɡɑːn/ a polygon with eight sides and eight angles M S