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BADGE. A mark or sign worn by some persons, or placed upon certain things for the purpose of designation. Some public officers, as watchmen, policemen, and the like, are required to wear badges that they may be readily known. It is used figuratively when we say, possession of personal property by the seller, is. a badge of fraud.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
The physical method was based on film badge individual monitoring and irradiation of a simulator of a left hand containing thermoluminescent dosimeters.
The oldest and best-established personnel dosimeter is the film badge; others include the optically stimulated luminescent (OSL) dosimeter, the pocket ionization chamber and the thermoluminescent dosimeter (TLD).
We have heard earlier, in the briefing film, that film badges will be worn to determine the amount of individuals' radiation exposure, and "you'll be moved out in time to avoid sickness."
In addition to film badges worn at the collar level, nuclear medicine technologists also wear ring badges to measure radiation dose received as a result of handling radioactive materials.
The top brass must have thought I was in some sort of danger because I was issued with a film badge.
He was a voluntary advisor to the Scouting Association on one of the organisation's film badge examinations.
The film badge cannot measure exposures less than 10 mR.
In diagnostic radiography, approximately 95% of the radiologic technologist's film badge readings are directly related to radiation exposures received during image-intensified fluoroscopy and portable radiographic examinations.[1] The average output intensity from an unshielded fluoroscopy unit is about 500 mR/hr at a distance of 1 foot from the radiation source.[2] (The hour reflects only the actual accumulation of 60 minutes of radiation usage or the "fluoro-time.")