The chemical element (Symbol Og) with atomic number 118. It is the heaviest known element. Highly radioactive, it does not occur naturally. Originally expected to be a noble gas, it is now predicte...

(construction) finely graded iron particles combined with an oxidizing catalyst. When mixed with water (or water, cement and sand), the finely distributed particles expand, creating a waterproof la...

The act of exemplifying; a showing or illustrating by example. / That which exemplifies; a case in point; example.

plural of Sapa Inca