a series of radioactive metallic elements in group IIIb of the periodic table. Members of the series are often called actinides, although actinium (at...
( k´m sts) (KEY) , school of Russian poets started in 1912 by Sergei M. Gorodetsky and Nikolai Stepanovich Gumilev as a reaction against the mystici...
(br k´s s) (KEY) , 4th cent. B.C., Greek sculptor. With Scopas, Leochares, and Timotheus, he worked on the sculptures of the Mausoleum at Halicarnas...