This military and organizational verb means to place or post in front, particularly in contexts of battle formations where troops were stationed ahead of others for protection or attack. The middle voice indicated posting one's own forces forward. Beyond literal positioning, it developed the sense of ranking something as prior or superior in importance or sequence. In administrative documents, it could mean 'the aforesaid' or 'previously mentioned.' The word reflects Greek concern with proper ordering, whether of soldiers in formation or concepts in philosophical priority.