diff -r 04f176e237cc -r dfe19304d980 src/pyams_thesaurus/interfaces/term.py
--- a/src/pyams_thesaurus/interfaces/term.py	Tue Aug 28 17:02:29 2018 +0200
+++ b/src/pyams_thesaurus/interfaces/term.py	Wed Aug 29 13:56:54 2018 +0200
@@ -78,6 +78,10 @@
                                  description=_("Parent generic term of the current term"),
                                  required=False)
 
+    order = Int(title=_("Order"),
+                description=_("Term's position between it's siblings; default terms order is alphabetical"),
+                required=False)
+
     specifics = ThesaurusTermsListField(title=_("Specifics terms"),
                                         description=_("Child more specifics terms of the current term"),
                                         required=False)