In palaeography, a minim is a short, vertical stroke used in handwriting. The word is derived from the Latin minimum, meaning "least" or "smallest". A minim is the basic stroke for the letters i, m, n, and u in uncial script and later scripts deriving from it. Parts of other letters are based on minims as well: when a minim is extended above the line, it becomes an ascender, as in the letters d and b, and when it is extended below the line, it becomes a descender, as in the letters p and q. It is a stem when it forms only part of a letter, such as r.