The word baroque is derived from the Portuguese word "barroco" and refers to a "rough or imperfect pearl". Like most periodic or stylistic designations, was invented by later critics rather than practitioners of the arts in the 17th and early 18th centuries. It is a French transliteration of the Portuguese phrase "pérola barroca", which means "irregular pearl", and natural pearls that deviate from the usual, regular forms so they do not have an axis of rotation are known as "baroque pearls".
