diff --git a/src/cco-modules/ExtendedRelationOntology.ttl b/src/cco-modules/ExtendedRelationOntology.ttl
index 2937f66..b364517 100644
--- a/src/cco-modules/ExtendedRelationOntology.ttl
+++ b/src/cco-modules/ExtendedRelationOntology.ttl
@@ -53,13 +53,6 @@ cco:copyright rdf:type owl:AnnotationProperty ;
               rdfs:label "copyright"@en .
 
 
-###  http://www.ontologyrepository.com/CommonCoreOntologies/definition
-skos:definition rdf:type owl:AnnotationProperty ;
-               skos:definition "A natural language explication of the meaning of the term."@en ;
-               cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/ExtendedRelationOntology"^^xsd:anyURI ;
-               rdfs:label "definition"@en .
-
-
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/definition_source
 cco:definition_source rdf:type owl:AnnotationProperty ;
                       skos:definition "A citation of where all or some of the information used to create the term's Definition was acquired from."@en ;