octopodes

Octopuses, hippopotamuses and rhinoceroses are all fine by me. I also like the fact that the last of these makes a sight rhyme with noses and roses. (I love sight rhymes.)

Pous being a type-3 Greek noun, the plural is podes, in two syllables. This is a rare form; more commonly, as in hippopotamus, the plural will take the form hippopotamoi. Rhinoceros becomes rhinocera (although that also is irregular, as it ought to be rhinocerata).

Haha.. My professor taught us this word in Latin class :)

Gotta love those plurals from Greek (the plural is very much not octopi!). Oh and it's pronounced okk-TOP-oh-deez. Jeez. :)