Duple Meter

Entertainment / Literature / Duple Meter: Poetry consisting of two syllables to a metrical foot, and one foot to each line. It is a rare form. One example noted in J. A. Cuddon's Penguin Dictionary of Literary Terms comes from Herrick's 'Upon His Departure Hence': Thus I, Pass by, And die: As One, Unknown, And go.


Entertainment / Photography / Photometer: Instrument for measuring light being reflected from a surface. It works by comparing the reflected light with a standard source produced within the photometer. MORE


Science / Chemistry / Picometer: One picometer is 10-12 meters. MORE

Personal People Meter (PPM)

Technology / Television (TV) / 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 broadcasters MORE


Entertainment / Golf / 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 center of MORE

Perimeter Drain

Business / Construction / 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 foundation. Genera MORE

Pitch Diameter

Business / Machine Shop / Pitch Diameter: The diameter of a thread at an imaginary point where the width of the groove and the with of the thread are equal. MORE