IshGen 148:10 :ܕܡܬܕܡܝܢܐ ܗܘ ܒܒܪܐ ܘܠܘ ܒܪܐ‏ : that he (Melchizedek) is comparable to the Son but is not the Son
See the entire entry for meṯdammyān, meṯdammyānā nom.ag.Dt imitable, comparable