tritium

Ancient Greek τρίτος (trítos, “third”) +‎ -ium.

tritium (plural tritiums)

1. (physics) A radioactive isotope of the element hydrogen (symbol T or ³₁H) having one proton and two neutrons.
2. An atom of this isotope.
   • 1998, Donald Lee Wise, Electrical and optical polymer systems‎, →ISBN, page 765:

     Electrochemical polymerization of the 1,2-tritiated monomer produced a polymer in which all of the tritiums were eliminated except for those located at the ends of the chains

• T (chemical symbol), hydrogen-3

• hydrogen

• (isotopes of hydrogen): protium, deuterium, quadrium

• tritium oxide

• triton

• Elementymology

• tritium on Wikipedia.Wikipedia

• ittrium

From Ancient Greek τρίτος (trítos, “third”) +‎ -ium.

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• Hyphenation: tri‧ti‧um

tritium n (uncountable)

1. tritium

• IPA^(key): /ˈtritiu̯m/, [ˈt̪rit̪iu̯m]
• Hyphenation: tri‧tium

tritium

1. (physics) tritium

• (Classical) IPA^(key): /ˈtri.ti.um/, [ˈtrɪ.ti.ũː]

tritium n (genitive tritiī or tritī); second declension

1. tritium

Second declension.

¹Found in older Latin (until the Augustan Age).