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Wordnet 3.0

NOUN (2)

1. the last (12th) month of the year;
[syn: December, Dec]

2. (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere;
[syn: declination, celestial latitude, dec]


WordNet (r) 3.0 (2006):

Dec n 1: the last (12th) month of the year [syn: December, Dec] 2: (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere [syn: declination, celestial latitude, dec]
V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014):

DEC Digital Equipment Corporation (manufacturer)
The Jargon File (version 4.4.7, 29 Dec 2003):

DEC /dek/, n. n. Commonly used abbreviation for Digital Equipment Corporation, later deprecated by DEC itself in favor of ?Digital? and now entirely obsolete following the buyout by Compaq. Before the killer micro revolution of the late 1980s, hackerdom was closely symbiotic with DEC's pioneering timesharing machines. The first of the group of cultures described by this lexicon nucleated around the PDP-1 (see TMRC). Subsequently, the PDP-6, PDP-10, PDP-20, PDP-11 and VAX were all foci of large and important hackerdoms, and DEC machines long dominated the ARPANET and Internet machine population. DEC was the technological leader of the minicomputer era (roughly 1967 to 1987), but its failure to embrace microcomputers and Unix early cost it heavily in profits and prestige after silicon got cheap. Nevertheless, the microprocessor design tradition owes a major debt to the PDP-11 instruction set, and every one of the major general-purpose microcomputer OSs so far (CP/M, MS-DOS, Unix, OS/2, Windows NT) was either genetically descended from a DEC OS, or incubated on DEC hardware, or both. Accordingly, DEC was for many years still regarded with a certain wry affection even among many hackers too young to have grown up on DEC machines.
The Free On-line Dictionary of Computing (18 March 2015):

dec /dek/ decrement, decrease by one. Especially used by assembly language programmers, as many assembly languages have a "dec" mnemonic. Opposite: inc. [Jargon File]
The Free On-line Dictionary of Computing (18 March 2015):

Digital Equipment Corporation DEC (DEC) A computer manufacturer and software vendor. Before the killer micro revolution of the late 1980s, hackerdom was closely symbiotic with DEC's pioneering time-sharing machines. The first of the group of hacker cultures nucleated around the PDP-1 (see TMRC). Subsequently, the PDP-6, PDP-10, PDP-20, PDP-11 and VAX were all foci of large and important hackerdoms and DEC machines long dominated the ARPANET and Internet machine population. The first PC from DEC was a CP/M computer called Rainbow, announced in 1981-82. DEC was the technological leader of the minicomputer era (roughly 1967 to 1987), but its failure to embrace microcomputers and Unix early cost it heavily in profits and prestige after silicon got cheap. However, the microprocessor design tradition owes a heavy debt to the PDP-11 instruction set, and every one of the major general-purpose microcomputer operating systems so far (CP/M, MS-DOS, Unix, OS/2) were either genetically descended from a DEC OS, or incubated on DEC hardware or both. Accordingly, DEC is still regarded with a certain wry affection even among many hackers too young to have grown up on DEC machines. The contrast with IBM is instructive. Quarterly sales $3923M, profits -$1746M (Aug 1994). DEC was taken over by Compaq Computer Corporation in 1998. In 2002 Compaq was in turn acquired by Hewlett-Packard who sold off parts of Digital Equipment Corporation to Intel and absorbed the rest. The Digital logo is no longer used. (2012-07-29)