An abbreviation for gallons per hour, measuring how much liquid flows or is used in a 60-minute period.
From English 'gallons' + 'per' + 'hour'; technical notation developed for engineering and industrial applications in the 1900s.
Fire hoses deliver 80-300 gph, while a typical garden hose flows at about 9 gph—the difference is why firefighters need special pressure calculations.
Complete word intelligence in one call. Free tier — 50 lookups/day.