Reference meaning
Th
Last updated
the fifth day of the week; the fourth working day
Related source terms
Other meanings
2. noun
a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 15164354-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.