pilot chart

pilot chart

noun
1.
any of a number of charts issued to mariners by the U.S. Hydrographic Office and showing meteorological, hydrographic, and navigational conditions prevailing, or likely to prevail, subsequent to the date of issue in some part of the world: issued monthly for most areas.
2.
a chart giving information on atmospheric conditions at various altitudes.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
pilot chart

noun
a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions [syn: naval chart
WordNet® 3.0, © 2006 by Princeton University.
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