Found 2 items, similar to onomastic.
English → English (WordNet) Definition: onomastic onomastic adj : of or related to onomastics; “he published a collection of his onomastic essays”
English → English (gcide) Definition: Onomastic Onomastic \On`o*mas"tic\, a. [Gr. ?, from ? to name, 'o`noma name.] (Law) Applied to a signature when the body of the instrument is in another's handwriting. --Burrill. [1913 Webster]