What is the form of octopus's?
The plural of Octopus is Octopuses. Octopodes is also acceptable but rarely used. The common misconception that the plural is octopi comes from the incorrect assumption that Octopus is a Latin word, it is in fact Greek.According to the authoritative Oxford English Dictionary, "the standard plural in English of octopus is octopuses. However , the word octopus comes from Greek and the Greek plural form octopodes is still occasionally used . The plural form octopi, formed according to rules for some Latin plurals, is incorrect"