A cella (from Latin for small chamber) or naos (from the Greek ναός meaning temple), is the inner chamber of a temple in classical architecture, or a shop facing the street in domestic Roman architecture (see domus). Its enclosure within walls has given rise to extended meanings, of a hermit's or monk's cell, and since the 17th century, of a biological cell in plants or animals.
Read more about Cella: Greek and Roman Temples, Etruscan Temples, Egyptian Temples, Christian Churches