noun

• A bound collection of maps often including tables, illustrations or other text.
• A bound collection of tables, illustrations etc. on any given subject.
• (chiefly in anatomy, especially of the human body) A detailed visual conspectus of something of great and multi-faceted complexity, with its elements splayed so as to be presented in as discrete a manner as possible whilst retaining a realistic view of the whole.
• (differential geometry, topology) A family of coordinate charts that cover a manifold.
• (anatomy) The uppermost vertebra of the cervical spine in the neck in humans and some other animals.
• One who supports a heavy burden; mainstay.
• (architecture) A figure of a man used as a column.
• (paper) A sheet of paper measuring 26 inches by 34 inches.
• (historical) A rich satin fabric.
• (Greek mythology) The son of Iapetus and Clymene, war leader of the Titans ordered by the god Zeus to support the sky on his shoulders; father to the Hesperides, the Hyades, and the Pleiades; king of the legendary Atlantis.
• A placename:
• (astronomy) A moon of Saturn.
• (astronomy) A crater in the last quadrant of the moon.
• (astronomy) A triple star system in the Pleiades open cluster (M45) also known as 27 Tauri.
• (countable) A surname.
• (astronautics, military, US) An SM-65, an early ICBM, soon developed into a long-lived orbital launch vehicle series.
• (astronautics, military, US) A particular model or individual specimen of the Atlas missile and launch vehicle line.
• A subgroup of the Berber languages.