4 definitions
for CTSS
From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) :
CTSS
Compatible Time Sharing System (Unix, predecessor, OS, MIT)
From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) :
CTSS
Cray TimeSharing System (OS, Cray, LLNL)
From Jargon File (4.3.1, 29 Jun 2001) :
CTSS /C-T-S-S/ n. Compatible Time-Sharing System. An early (1963)
experiment in the design of interactive time-sharing operating systems,
ancestral to {Multics, {Unix}, and {ITS}. The name {ITS}
(Incompatible Time-sharing System) was a hack on CTSS, meant both as a
joke and to express some basic differences in philosophy about the way
I/O services should be presented to user programs.
From The Free On-line Dictionary of Computing (27 SEP 03) :
CTSS
Compatible Timesharing System