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descriptor

[dih-skrip-ter] /dɪˈskrɪp tər/
noun
1.
a significant word or phrase used to categorize or describe text or other material, especially when indexing or in an information retrieval system.
2.
Computers. a data item that stores the attributes of some other datum:
a task descriptor.
Origin of descriptor
1930-1935
1930-35, for an earlier sense; describe + -tor, with vowel change and devoicing by analogy with similar L derivatives
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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