Related Words

Additive Meter: Groupings of irregular numbers of beats that add up to a larger, overall pattern (2 + 3 + 2 + 3 = 10).

Photometer: Any of a number of atmospheric phenomena which appear as luminous patterns in the sky. They do not directly cause adverse weather. They include halos, coronas. rainbows, and fogbows.

Personal People Meter (PPM): Hardware currently being tested by Arbitron. The PPM is a pager-sized device that is worn by consumers throughout the day to automatically detect inaudible codes that radio and television br . . . View Full Definition

Perimeter-Weighted: (also 'cavity back, cavity-back') a style of club head where the mass is distributed more toward the perimeter (outside edges) of the club head in order to increase the effective size of the . . . View Full Definition

Perimeter: The area beyond the foul circle away from the basket, including 3-point line, from which players take long-range shots.

Perimeter Drain: 3' or 4' perforated plastic pipe that goes around the perimeter (either inside or outside) of a foundation wall (before backfill) and collects and diverts ground water away from the foundati . . . View Full Definition

Picometer: One picometer is 10-12 meters.

Port Diameter: The measurement across the port opening. Measured as internal diameter (not outer diameter .

Psychrometer: An instrument used to measure water vapor content of the atmosphere. It consists of two thermometers, a wet bulb and dry bulb. May also be referred to as a sling psychrometer.

Pyrometer: A device for measuring the high temperatures in a heat-treating furnace.