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Use "octopuses" in a sentence
"Of the three words commonly cited as a plural for octopus, octopuses is the preferred term."
"Mather calls octopuses "specializing generalists" when it comes to diet, meaning that they can eat a lot of different things, but each individual tends to pick a very distinct diet of personal favorites."
"Here's how to make hot dogs into octopi aka octopuses aka octopodes."