a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead krzyżówka

w chemii: symbol protaktynu. symbol paskala - jednostki ciśnienia (także naprężenia) w układzie SI. Pożegnanie ciepłe

a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones a mineral that contains metal that is valuable enough to be mined the pelt of a leopard any of various resins or oleoresins essential oil or perfume obtained from flowers a hard copal derived from an African tree any of various fragrant oleoresins used in medicines and perfumes a colloidal extract of algae; used especially in culture media and as a gelling agent in foods any culture medium that uses agar as the gelling agent any of various dark heavy viscid substances obtained as a residue a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium (physics and chemistry) the smallest component of an element having the chemical properties of the element any of a class of composite plastics used to make car bodies and cases for computers and other appliances (nontechnical usage) a tiny piece of anything state of disgrace resulting from detestable behavior special emphasis attached to something; "the stress was more on accuracy than on speed" the state of being connected; "the connection between church and state is inescapable" a state of depression; "he had a bad case of the blues" a state of individual psychological well-being based upon a sense of confidence and usefulness and purpose a painful muscle spasm especially in the neck or back (`rick' and `wrick' are British)