Hello, you have come here looking for the meaning of the word oct-. In DICTIOUS you will not only get to know all the dictionary meanings for the word oct-, but we will also tell you about its etymology, its characteristics and you will know how to say oct- in singular and plural. Everything you need to know about the word oct- you have here. The definition of the word oct- will help you to be more precise and correct when speaking or writing your texts. Knowing the definition ofoct-, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.