Sr, symbol for the element strontium strontium (strŏn`shēəm) [from Strontian, a Scottish town], a metallic chemical element; symbol Sr; at. no. 38; at. wt.
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Socialist Revolutionary Party (SR)

Russian political party. The ideological heir to the 19th-century Narodniks (Populists), it was founded in 1901 by agrarian socialists and appealed mainly to the peasantry. It was the principal alternative to the Russian Social-Democratic Workers' Party in the early 20th century. It relied on terrorist tactics and carried out hundreds of political assassinations. By 1917 it was Russia's largest socialist group; its members included Aleksandr Kerensky, Viktor Chernov, and Catherine Breshkovsky. The party split after the Russian Revolution of 1917, and its radical wing joined the Bolshevik government. It was suppressed by Vladimir Lenin after the Russian Civil War.

1.	(language)	SR - Synchronizing Resources. A language for concurrent programming. "Resources" encapsulate processes and variables they share. Each Resource can be separately compiled. "Operations" provide the primary mechanism for process interaction. SR provides a novel integration of the mechanisms for invoking and servicing operations. Consequently, it supports local and remote procedure call, rendezvous, message passing, dynamic process creation, multicast, semaphores and shared memory. Version 2.2 has been ported to Sun-3, Sun-4, Decstation, SGI Iris, HP PA, HP 9000/300, NeXT, Sequent Symmetry, DG AViiON, RS/6000, Multimax, Apollo and others. ftp://cs.arizona.edu/sr/sr.tar.Z. E-mail: <sr-project@cs.arizona.edu>. Mailing list: info-sr-request@cs.arizona.edu. ["An Overview of the SR Language and Implementation", G. Andrews, ACM TOPLAS 10:51-86 (Jan 1988)]. ["The SR Programming Language: Concurrency in Practice", G.R. Andrews et al, Benjamin/Cummings 1993, ISBN 0-8053-0088-0].
2.	(networking)	sr - The country code for Suriname.