The Collaborative International Dictionary of English v.0.48:

Atlas \At"las\, n. [Ar., smooth.]
   A rich kind of satin manufactured in India. --Brande & C.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Atlas \At"las\, n.; pl. Atlases. [L. Atlas, -antis, Gr. ?, ?,
   one of the older family of gods, who bears up the pillars of
   heaven; also Mt. Atlas, in W. Africa, regarded as the pillar
   of heaven. It is from the root of tlh^nai to bear. See
   Tolerate.]
   1. One who sustains a great burden.
      [1913 Webster]

   2. (Anat.) The first vertebra of the neck, articulating
      immediately with the skull, thus sustaining the globe of
      the head, whence the name.
      [1913 Webster]

   3. A collection of maps in a volume;

   Note: supposed to be so called from a picture of Atlas
         supporting the world, prefixed to some collections.
         This name is said to have been first used by Mercator,
         the celebrated geographer, in the 16th century.
         [1913 Webster]

   4. A volume of plates illustrating any subject.
      [1913 Webster]

   5. A work in which subjects are exhibited in a tabular from
      or arrangement; as, an historical atlas.
      [1913 Webster]

   6. A large, square folio, resembling a volume of maps; --
      called also atlas folio.
      [1913 Webster]

   7. A drawing paper of large size. See under Paper, n.
      [1913 Webster]

   Atlas powder, see Atlas powder in the vocabulary; a
      blasting compound containing nitroglycerin.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Atlas
    n 1: (Greek mythology) a Titan who was forced by Zeus to bear
         the sky on his shoulders
    2: a collection of maps in book form [syn: atlas, book of
       maps, map collection]
    3: the 1st cervical vertebra [syn: atlas, atlas vertebra]
    4: a figure of a man used as a supporting column [syn: atlas,
       telamon]

Moby Thesaurus II by Grady Ward, 1.0:

97 Moby Thesaurus words for "atlas":
   Lambert conformal projection, Mercator projection,
   Miller projection, aeronautical chart, arcade, astronomical chart,
   azimuthal equidistant projection, azimuthal projection, calendar,
   cartographer, cartography, caryatid, casebook, catalog,
   catalogue raisonne, celestial chart, celestial globe, chart,
   chorographer, chorography, city directory, classified catalog,
   climatic chart, colonnade, colonnette, column, concordance,
   conic projection, contour line, contour map, cyclopedia,
   cylindrical projection, diatesseron, dictionary catalog, directory,
   encyclopedia, gazetteer, general reference map, globe,
   gnomonic projection, graphic scale, grid line, hachure, harmony,
   heliographic chart, hydrographic chart, index, isoline, latitude,
   layer tint, legend, longitude, map, map maker, map projection,
   mapper, meridian, parallel, peristyle, phone book,
   photogrammetrist, photogrammetry, photomap, phototopography,
   physical map, pier, pilaster, pillar, political map,
   polyconic projection, polyglot, portico, post, projection,
   record book, reference book, relief map, representative fraction,
   road map, scale, sinusoidal projection, source book, special map,
   studbook, telamon, telephone book, telephone directory,
   terrain map, terrestrial globe, thematic map, topographer,
   topographic chart, topography, transportation map, weather chart,
   weather map, work of reference



Moby Thesaurus II by Grady Ward, 1.0:

96 Moby Thesaurus words for "Atlas":
   Antaeus, Asp, Asroc, Atlas-Agena, Atlas-Centaur, Briareus,
   Brobdingnagian, Bullpup, Cajun, Charles Atlas, Corporal, Corvus,
   Crossbow, Cyclops, Dart, Deacon, Delta, Diamant, Dove, Falcon,
   Firebee, Gargantua, Genie, Goliath, Hawk, Hercules, Holy Moses,
   Hound Dog, Jupiter, Lacrosse, Lark, Loki, Loon, Mace, Matador,
   Navaho, Nike, Nike Ajax, Orion, Pershing, Petrel, Polaris,
   Polyphemus, Poseidon, Quail, Ram, Rascal, Redeye, Redstone,
   Regulus I, SLAM, Samson, Saturn, Scout, Sentinel, Sergeant,
   Shillelagh, Sidewinder, Skybolt, Snark, Spaerobee, Sparrow, Subroc,
   Super Talos, Superman, Talos, Tartar, Tarzan, Telamon, Terrier,
   Thor, Thor Able Star, Thor-Agena, Thor-Delta, Tiny Tim, Titan, V-2,
   Viking, WAC-Corporal, Wagtail, Zuni, bully, bullyboy, colossus,
   giant, gorilla, muscle man, powerhouse, stalwart, strong man,
   strong-arm man, the mighty, the strong, tough, tough guy,
   tower of strength



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ATLAS
       Automatically Tuned Linear Algebra Software (BLAS, API)


The Free On-line Dictionary of Computing (30 December 2018):

Abbreviated Test Language for Avionics Systems
ATLAS

    (ATLAS) A Mil-spec language for automatic testing
   of avionics equipment.  ATLAS replaced Gaelic and several
   other test languages.

   ["IEEE Standard ATLAS Test Language", IEEE Std 416-1976].

   (2000-04-03)