Acmeism
noun
Ac·me·ism ˈak-mē-ˌi-zəm 
: a literary movement among Russian poets in the early 20th century that was characterized by a reaction against the vagueness of symbolism and by an emphasis on clarity
Acmeism, Futurism, and other movements flourished and then were silenced by the Stalin era.
A. V. Knowles, Notes and Queries, March 1993
A. V. Knowles, Notes and Queries, March 1993 Acmeist
ˈak-mē-ist
adjective The Acmeist movement reacted against the refined and beautiful obscurities of Symbolism … Michael Collier, Baltimore Sun, 23 Feb. 2003
Michael Collier, Baltimore Sun, 23 Feb. 2003 Acmeist noun
or less commonly acmeist
plural Acmeists also acmeists
The work of the major Acmeists began to appear in the Soviet Union only … in the 1960s … Bernice Glatzer Rosenthal, Nietzsche and Soviet Culture, 1994
Bernice Glatzer Rosenthal, Nietzsche and Soviet Culture, 1994 
Word History
Etymology
borrowed from Russian akmeizm, from Greek akmḗ acme + Russian -izm -ism
First Known Use
1913, in the meaning defined above