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primary quality

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noun Epistemology.
  1. any of the qualities inherent in an object, namely quantity, extent, figure, solidity, and motion or rest.
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Origin of primary quality

First recorded in 1650–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for primary qualities

primary qualities

pl n
  1. (in empiricist philosophy) those properties of objects that are directly known by experience, such as size, shape, and number
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012