diff --git a/definitions/grib2/template.4.parameter_chemical.def b/definitions/grib2/template.4.parameter_chemical.def
index 767daf9cf..6b29f1591 100644
--- a/definitions/grib2/template.4.parameter_chemical.def
+++ b/definitions/grib2/template.4.parameter_chemical.def
@@ -10,6 +10,7 @@ meta parameterName  codetable_title(parameterNumber) : dump;
 
 # Atmospheric chemical or physical constitutent type
 codetable[2] constituentType ('4.230.table',masterDir,localDir) : dump;
+meta constituentTypeName codetable_title(constituentType);
 
 #  Type of generating process
 codetable[1] typeOfGeneratingProcess ('4.3.table',masterDir,localDir) : dump;
diff --git a/definitions/grib2/template.4.parameter_chemical_distribution.def b/definitions/grib2/template.4.parameter_chemical_distribution.def
index 9a4265f0c..203b468d0 100644
--- a/definitions/grib2/template.4.parameter_chemical_distribution.def
+++ b/definitions/grib2/template.4.parameter_chemical_distribution.def
@@ -10,6 +10,7 @@ meta parameterName  codetable_title(parameterNumber) : dump;
 
 # Atmospheric chemical or physical constitutent type
 codetable[2] constituentType ('4.230.table',masterDir,localDir) : dump;
+meta constituentTypeName codetable_title(constituentType);
 
 # Number of mode(N) of distribution
 unsigned[2] numberOfModeOfDistribution : dump;
diff --git a/definitions/grib2/template.4.parameter_chemical_source.def b/definitions/grib2/template.4.parameter_chemical_source.def
index 94dc3c4a9..3b78cf330 100644
--- a/definitions/grib2/template.4.parameter_chemical_source.def
+++ b/definitions/grib2/template.4.parameter_chemical_source.def
@@ -10,6 +10,7 @@ meta parameterName  codetable_title(parameterNumber) : dump;
 
 # Atmospheric chemical or physical constitutent type
 codetable[2] constituentType ('4.230.table',masterDir,localDir) : dump;
+meta constituentTypeName codetable_title(constituentType);
 
 # Source, sink or chemical/physical process (Code table 4.238)
 codetable[1] sourceSinkChemicalPhysicalProcess ('4.238.table',masterDir,localDir) = 255 : dump;