单词 | paraffin test |
释义 | paraffin testnoun A forensic test to indicate whether a person has recently fired a gun, in which the person's hand is coated in hot paraffin wax which cools and sets and is peeled off and tested for the presence of residue from the gun. Origin1930s; earliest use found in The Washington Post. Probably after American Spanish; use of the test in Mexico City is reported from 1931. |
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