[trit-ee-uh
m, trish-, trish-uhm] 
| an isotope of hydrogen having an atomic weight of three. |
| trit·i·um (trĭt'ē-əm, trĭsh'ē-) n. A rare radioactive hydrogen isotope with atomic mass 3 and half-life 12.5 years, prepared artificially for use as a tracer and as a constituent of hydrogen bombs. [From Greek tritos, third; see trei- in Indo-European roots.] |
tritium trit·i·um (trĭt'ē-əm, trĭsh'ē-)
n.
Symbol T
A rare radioactive hydrogen isotope with atomic mass 3 and half-life 12.5 years, prepared artificially for use as a tracer and as a constituent of hydrogen bombs. Also called hydrogen-3.
| tritium (trĭt'ē-əm, trĭsh'ē-əm) Pronunciation Key
A radioactive isotope of hydrogen whose nucleus has one proton and two neutrons with atomic mass of about 3 and a half life of 12.5 years. Tritium is rare in nature but can be made artificially in nuclear reactions. It is used in thermonuclear weapons and luminescent paints, and sometimes as a tracer. See more at hydrogen. |