Among the smorgasbord of dinosaurs that feature in this summer's biggest blockbuster, Jurassic World, is the little-known Pachycephalosaurus.

It is pronounced (pak-ee-sef-a-low-sor -us), and the lizard-like creature has a habit of escaping its enclosure.

Now, this is a fast-paced action film so there is no time for such lengthy paleontological words, leading a character to at one point abbreviate and shout: "The Pachys are out of containment!"

Phonetically this sounds like a wildly racist slur, and it has left some viewers squirming uncomfortably in their seats