Friedrich Oskar Giesel Reference Libraries
Actinium is a radioactive chemical element. The symbol for Actinium is Ac and the atomic number is 89. Actinium was discovered in 1899 by French chemist AndrÃ©-Louis Debierne. It was the first non-primordial radioactive element to be isolated. Actinium is amongst a group of 15 similar elements within the periodic table that make up the actinoid series. This substance was also independently...
- A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
- Clothing, especially sumptuous clothing; equipment; outfit.
- To cover with a caparison, as a horse.
- To dress sumptuously; adorn with rich dress.