l has various meanings in the Ordnance Survey category. Discover the full forms, definitions, and usage contexts of l in Ordnance Survey.
Chemical symbol Pb. Very soft, bluish-white metal; highly malleable and ductile; poor conductor of electricity, but good noise-dampening material; resistant to corrosion and radiation. Obtained from galena ore. Major end-use is storage batteries, which accounts for 60% of world lead consumption. Also used in ammunition, but has declining use in paints, plumbing equipment and cable coverings because of its toxicity.
Ordnance SurveyIntercepted arc of Equator, or angle at Pole, between the prime meridian and the meridian passing through a named position
Ordnance SurveySame as angle bar. In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
Ordnance SurveyA body of fresh or salt water entirely surrounded by land.
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