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Wordnet 3.0

NOUN (1)

1. Greek mathematician and physicist noted for his work in hydrostatics and mechanics and geometry (287-212 BC);


The Collaborative International Dictionary of English v.0.48:

Archimedes \Ar`chi*me"des\, n. (Paleon.) An extinct genus of Bryzoa characteristic of the subcarboniferous rocks. Its form is that of a screw. [1913 Webster]
WordNet (r) 3.0 (2006):

Archimedes n 1: Greek mathematician and physicist noted for his work in hydrostatics and mechanics and geometry (287-212 BC)
The Jargon File (version 4.4.7, 29 Dec 2003):

Archimedes The world's first RISC microcomputer, available only in the British Commonwealth and europe. Built in 1987 in Great Britain by Acorn Computers, it was legendary for its use of the ARM-2 microprocessor as a CPU. Many a novice hacker in the Commonwealth first learnt his or her skills on the Archimedes, since it was specifically designed for use in schools and educational institutions. Owners of Archimedes machines are often still treated with awe and reverence. Familiarly, ?archi?.
The Free On-line Dictionary of Computing (18 March 2015):

Archimedes Acorn Archimedes A family of microcomputers produced by Acorn Computers, Cambridge, UK. The Archimedes, launched in June 1987, was the first RISC based personal computer (predating Apple Computer's Power Mac by some seven years). It uses the Advanced RISC Machine (ARM) processor and includes Acorn's multitasking operating system and graphical user interface, RISC OS on ROM, along with an interpreter for Acorn's enhanced BASIC, BASIC V. The Archimedes was designed as the successor to Acorn's sucessful BBC Microcomputer series and includes some backward compatibility and a 6502 emulator. Several utilities are included free on disk (later in ROM) such as a text editor, paint and draw programs. Software emulators are also available for the IBM PC as well as add-on Intel processor cards. There have been several series of Archimedes: A300, A400, A3000, A5000, A4000 and RISC PC. Usenet FAQ (ftp://rtfm.mit.edu/pub/usenet/news.answers/acorn/). Archive site list (http://cs.vu.nl/~gerben/acorn/acorn-archives.txt). HENSA archive (ftp://micros.hensa.ac.uk/). Stuttgart archive (ftp://ftp.uni-stuttgart.de/pub/systems/acorn). See also Crisis Software, Warm Silence Software. (1998-04-03)