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minor sea god, son of Poseidon and Amphitrite, from Greek Triton, cognate with Old Irish triath (genitive trethan) "sea."
nucleus of the heaviest hydrogen isotope, tritium, or hydrogen-3. Tritons, which consist of one proton and two neutrons, result from certain nuclear reactions. The collision of a deuteron with another deuteron, for example, sometimes produces a proton and a triton. See also tritium.