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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
Common Core alignment
Grades served: 5, 6
- L.5.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., photograph, photosynthesis).
- L.6.4bUse common, grade-appropriate Greek or Latin affixes and roots as clues to the meaning of a word (e.g., audience, auditory, audible).
Number & quantity. Roots that count, measure, and tell you how many.
Browse all number & quantity roots →L.5.4bL.6.4b