guideline
UK: ˈɡaɪd.laɪn | US: ˈɡaɪd.laɪn
n. a general rule, principle, or piece of advice to follow in a particular situation
n. a line or mark serving as a guide, especially in printing or design
The word "guideline" combines "guide," derived from Old French guider (to lead or direct), and "line," from Latin linea (a string or mark). Originally used literally for physical lines (e.g., in printing or construction), it evolved metaphorically to denote principles or rules that "direct" behavior or decisions. The morphemes reflect a clear functional progression: guiding (action) + line (visible structure).
The manual provides clear guidelines for safe equipment operation.
Follow these guidelines to ensure your application is processed quickly.
The designer used a guideline to align the text perfectly.
New health guidelines recommend at least 30 minutes of exercise daily.
The project adhered to international environmental guidelines.