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| Pico
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Term, often used as a prefix, which means one trillionth. |
| Picocurie
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A unit of measurement used to describe radon concentration. |
| Picotee
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Term applied to a narrow band of color on a pale ground at the edge of a petal. |
| Pictorial drawing
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Drawings, such as oblique, perspective and axonometic, with a three-dimensional view. |
| Picture framing
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Rectangular patterns seen in a roof that are created by buckles or ridges in the roof system or sumps in the substrate. |
| Picture framing vise
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Vise able to hold pieces together at a 90-degree angle, useful in making picture frames. |
| Picture rail
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Decorative molding which is often run around the top of a wall, close to the ceiling, for hanging pictures or above wall covering. |
| Picture window
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Single-paned, large window which does not open and is often installed in the center of the wall. |
| Pie chart
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Circular graph, which is divided into sections in which relative quantities are indicated by the different sizes of the sections. |
| Pier
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Column designed to support a concentrated load. Pier columns are made of steel, steel reinforced concrete or wood. Alternately, a structure extending out into the water which is supported by numerous columns providing access to water or vessels. |
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