identification particle

Noun
  1. A tiny particle of material that can be added to a product to indicate the source of manufacture (synset 114940336)
    is a type of: atom, corpuscle, molecule, mote, particle, speck - (nontechnical usage) a tiny piece of anything
    subtypes: microtaggant - (trademark) a microscopic and traceable identification particle used to trace explosives or other hazardous materials or to prevent counterfeiting

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