reciprocal of amount absent absent from organism PATO:0001996 A quality denoting the lack of an entity. PATO:0000462 We recommend using the new absent terms (physical absence, absent anatomical entity, or absent process) instead of this class. This is a legacy term and will ultimately be obsoleted. See https://github.com/pato-ontology/pato/issues/331. absence quality present lacking processual parts lacks all parts of type