prec
Prec is an informal abbreviation that appears in several fields. Because it is not a single standardized term, its meaning is determined by context. In meteorology and hydrology, prec or precip is commonly used as shorthand for precipitation—the process of water released from clouds as rain, snow, sleet, or hail. Precipitation is typically measured using rain gauges or radar and reported in millimeters or inches; records are used in weather forecasts, climate monitoring, and hydrological planning.
In measurement and data contexts, prec is often used as an abbreviation for precision—the degree to which
In mathematics and computer science, prec is sometimes used as a textual shorthand for "precedes" or a
Because prec has multiple meanings, readers should rely on surrounding text to determine which sense is intended.