diff --git a/src/cco-modules/ArtifactOntology.ttl b/src/cco-modules/ArtifactOntology.ttl
index a88e9a8..0905682 100644
--- a/src/cco-modules/ArtifactOntology.ttl
+++ b/src/cco-modules/ArtifactOntology.ttl
@@ -2418,7 +2418,7 @@ cco:LegalInstrument rdf:type owl:Class ;
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/LifeSupportArtifactFunction
 cco:LifeSupportArtifactFunction rdf:type owl:Class ;
                                 rdfs:subClassOf cco:ArtifactFunction ;
-                                cco:definition "An Artifact Function that is realized during events in which an Artifact is used to enable an organism to continue living in a situation where death would otherwise occur."@en ;
+                                cco:definition "An Artifact Function that is realized during events in which an Artifact materially affects an organism, where this causes that organism to continue living in a situation where death would otherwise occur."@en ;
                                 cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/ArtifactOntology"^^xsd:anyURI ;
                                 rdfs:label "Life Support Artifact Function"@en .
 
@@ -2547,7 +2547,7 @@ cco:MeasurementArtifactFunction rdf:type owl:Class ;
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/MedicalArtifact
 cco:MedicalArtifact rdf:type owl:Class ;
                     rdfs:subClassOf cco:Artifact ;
-                    cco:definition "A Material Artifact that is designed for diagnosing, treating, or preventing disease or disability."@en ;
+                    cco:definition "A Material Artifact that is designed for diagnosing, treating, or preventing disease, disability, or death."@en ;
                     cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/ArtifactOntology"^^xsd:anyURI ;
                     rdfs:label "Medical Artifact"@en .