Octopi

Origin

Created in Latin by analogy with pōlypus ("octopus"), which was either or in both Latin and Greek, though historically third in the latter.

Noun

1. (hypercorrect)

   octopi

   (irregular plural of octopus)

Usage notes

The forms octopuses and octopi appear roughly equally prevalent, with octopodes being much rarer. However, octopi is hypercorrect. See octopus for further discussion.