ETYM From Part.
Delivered at the moment of parting as if in flight or retreat; SYN. parthian.
1. The act of parting or dividing; the state of being parted; division; separation.
2. A separation; a departure.
3. A surface or line of separation where a division occurs.
4. The separation and determination of alloys; esp., the separation, as by acids, of gold from silver in the assay button.
5. A joint or fissure, as in a coal seam.