Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun tritium

1 sense of tritium

Sense 1
tritium -- (a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms)
       => hydrogen, H, atomic number 1 -- (a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe)