ETYM Greek, from onomazein, onom name.
1. Pertaining to names or naming.
2. Refers to a signature when the body of the instrument is in another's handwriting.
3. Of or pertaining to a name or signature.
4. Pertaining to or consisting of names; applied to autograph signature in one hand on document written in another.
(Linguistique) Étude des noms propres.