Follow the etymological path of acolyte back far enough and you'll arrive at kéleuthos, a Greek noun that means "path" and that is itself the parent of akólouthos, an adjective that means "following." Akólouthos traveled from Greek, leaving offspring in Medieval Latin and Anglo-French; its English descendant, acolyte, emerged in the 14th century. Originally, acolyte was exclusively a term for a person who assisted a priest at Mass, but by the 19th century, the word had acquired additional meanings, among them "attendant body, satellite" (a meaning used in astronomy) and "attendant insect" (a zoological sense), as well as the general meaning "assistant" or "sidekick."