bookmark MetaMap Maps biomedical text to the Unified Medical Language System (UMLS) Metathesaurus or, equivalently, to discover Metathesaurus concepts referred to in text. MetaMap breaks the text into phrases and then, for each phrase, it returns the mapping options ranked according to the strength of mapping. It is meant for applications that emphasize processing speed and ease of use. The tool is modular for local use thank to its Java implementation. It allows the user to use customized dictionaries and focus on a specific domain or provide broad coverage of text types and semantic types.