diff --git a/src/cco-modules/QualityOntology.ttl b/src/cco-modules/QualityOntology.ttl
index 82c9f11..3fddf15 100644
--- a/src/cco-modules/QualityOntology.ttl
+++ b/src/cco-modules/QualityOntology.ttl
@@ -736,7 +736,7 @@ cco:SpatialOrientation rdf:type owl:Class ;
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/Spherical
 cco:Spherical rdf:type owl:Class ;
               rdfs:subClassOf cco:ThreeDimensionalShape ;
-              cco:definition "A Three Dimensional Shape inhering in a bearer in virtue of it having round cross sections."@en ;
+              cco:definition "A Three Dimensional Shape inhering in a bearer in virtue of all of its cross sections being round."@en ;
               cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/QualityOntology"^^xsd:anyURI ;
               rdfs:label "Spherical"@en .