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countable and uncountable, plural symbologies
(uncountable) The study or use of symbols. examples
(countable) An encoding scheme, particularly for barcodes. quotations examples
Two-dimensional symbologies provide a means of storing large amounts of data in a very small space. Stacked symbologies (linear bar codes stacked on top of each other), matrix symbologies (comprising a matrix of light and dark elements, circles, squares, or hexagons), and packet symbologies (a collection of linear symbols “randomly” arranged on a page) are commonly used.
2012, Harvey Lehpamer, RFID Design Principles, Artech House, page 51