Multiple choice general knowledge math & puzzles An elephant, an animal with thick wrinkled skin... panacea pentameter pachyderm posterior Reveal answer Fill a bubble to check yourself C Correct answer Explanation The term 'pachyderm' comes from the Greek words 'pachys' (thick) and 'derma' (skin). It was historically used to describe non-ruminant mammals with thick skin, such as elephants, rhinoceroses, and hippopotamuses.