The spelling of the word "malurine" is easy to understand once you know how it's pronounced. It is pronounced /məˈluːrɪn/ and is a noun that refers to any of a group of antimalarial drugs. The word is composed of the prefix "malu-", which is derived from "malaria," and the suffix "-rine," which means "related to or resembling". Therefore, malurine refers to a drug that is related to or resembles those used to treat malaria. Its spelling may seem complex, but its pronunciation is straightforward once you've learned it.