symbol lot number A lot number is an information content entity which is an identical sequence of character borne by part of manufactured product or its packaging for each instances of a product class in a discrete batch of an item. Lot numbers are usually assigned to each separate production run of an item. Manufacturing as a lot might be due to a variety of reasons, for example, a single process during which many individuals are made from the same portion of source material. Lot numbers can be encoded in a pattern of other information objects, such as bar codes, numerals, or patterns of dots. GROUP: IAO batch number lot number metadata incomplete