Th — synonyms, definition

1. Th (Noun)

3 synonyms
Thursday atomic number 90 thorium
2 definitions

Th (Noun) — The fifth day of the week; the fourth working day.

Th (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.

3 types of
metal metallic element weekday
2 types
radiothorium thorium-228
2 parts of
monazite thorite