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A hydrometer scale for measuring the sugar content of a solution at a given temperature, used especially in the brewing of beer.
[After Fritz Plato (1858-1938), German chemist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.