Back to dictionary
oct-
(OKT)eight
Latin and Greek both use oct for eight. An octopus has eight arms; an octagon has eight sides.
prefixGreek & Latin
Number & quantitySpellings:octocto
Example words
octopus
a sea animal with eight arms
octagon
a shape with eight sides
October
originally the eighth month of the Roman year
Who it is for
Grades served: 5, 6
Level 2Level 1 holds the word parts students meet first. Level 3 holds the ones that turn up in harder reading.
Number & quantity. Roots that count, measure, and tell you how many.
Browse all number & quantity roots →