n. [ L. densus dense + -meter: cf. F. densimètre. ] An instrument for ascertaining the specific gravity or density of a substance. [ 1913 Webster ]

n. 1. for measuring doses of .
Syn. -- dosemeter. [ WordNet 1.5 ]

n. [ NL. dosis dose + -meter. ] a device for measuring doses of radiation, especially ionizing radiation such as X-rays, gamma rays, or ionizing particles. [ PJC ]

n. a dosimeter cosisting of a radiation-sensitive material, such as film, worn in a small package on a person's clothing, to record the accumulated radiation exposure of the person over a period of time; -- used to monitor the exposure of individuals, such as workers in a nuclear power plant, to ionizing radiation. [ PJC ]