- acronym formethod of procurement (written as MOP)
Origin & History of “mop”
Mop first appeared in the guise mappe, a late 15th-century sailors’ term for an improvised brush used for caulking ships’ seams with tar. The modern form mop, presumably the same word, did not emerge until the mid-17th-century. It may be a truncation of an earlier mapple ‘mop’ (15th c.), which came from late Latin mappula ‘towel, cloth’, a diminutive form of Latin mappa ‘cloth’ (source of English map).