Ps-Clem Recogs 3.156:27 :ܗܢܐ ܕܘܪܓܐ ܕܢܓܕ ܘܡܣܩ ܡܢ ܗܢܝܢ ܡܬܪ̈ܓܫܢܝܬܐ ܠܘܬ ܗܢܝܢ ܡܬܝܕܥ̈ܢܝܬܐ‏ : that gradation that leads up from those sensed things toward those intelligible things
See the entire entry for durrāḡ, durrāḡā v.n.D gradation