Fission track

fission track
A track left by the decay of uranium atoms in a mineral. By analyzing the number and nature of these tracks in a sample mineral and inducing further fission of the remaining uranium by irradiation with neutrons to create new tracks for comparison, one can estimate the approximate age of the sample.


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  • Fission-track dating

    noun 1. the dating of samples of minerals by comparing the tracks in them by fission fragments of the uranium nuclei they contain, before and after irradiation by neutrons

  • Fissipalmate

    [fis-uh-pal-meyt] /ˌfɪs əˈpæl meɪt/ adjective, Anatomy. 1. (of birds) having the toes lobed or partially webbed. /ˌfɪsɪˈpælmeɪt/ adjective 1. (of some birds’ feet) partially webbed, having lobes and fringes on separate toes

  • Fissiparity

    fissiparity fis·si·par·i·ty (fĭs’ə-pār’ĭ-tē) n. See schizogenesis.

  • Fissiparous

    [fi-sip-er-uh s] /fɪˈsɪp ər əs/ adjective 1. reproducing by fission. /fɪˈsɪpərəs/ adjective 1. (biology) reproducing by fission 2. having a tendency to divide into groups or factions fissiparous fis·sip·a·rous (fĭ-sĭp’ər-əs) adj. Reproducing or propagating by fission.

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