Atkins. See Tommy Atkins.
Atlantean, at-lan-tē′an, adj. relating to or like Atlas, gigantic: also relating to Atlan′tis, according to ancient tradition, a vast island in the Atlantic Ocean, or to Bacon's ideal commonwealth of that name. [See Atlas.]
Atlantes, at-lan′tēz, n.pl. figures of men used instead of columns. [From Atlas.]
Atlantic, at-lan′tik, adj. pertaining to Atlas, or to the Atlantic Ocean.—n. the ocean between Europe, Africa, and America. [From Mount Atlas, in the north-west of Africa, named from the Titan, Atlas.]
Atlas, at′las, n. that piece of the human vertebral column which articulates with the skull, so called because it supports the head: a collection of maps. [Gr. Atlas, Atlantis, a Titan who bore the world on his shoulders, and whose figure used to be given on the title-page of atlases.]
Atlas, at′las, n. a kind of silk-satin manufactured in the East. [Ar.]
Atmology, at-mol′o-ji, n. the science of the phenomena of aqueous vapour.—n. Atmol′ogist. [Gr. atmos, vapour, and logia, discourse—legein, to speak.]
Atmolysis, at-mol′i-sis, n. a method of separating a mixture of gases by taking advantage of their different rates of passage through a porous septum. [Gr. atmos, vapour, and lysis, loosing—lyein, to loose.]
Atmometer, at-mom′e-tėr, n. an instrument for measuring the rate of evaporation from a moist surface. [Gr. atmos, vapour, and Meter.]
Atmosphere, at′mo-sfēr, n. the gaseous envelope that surrounds the earth or any of the heavenly bodies: any gaseous medium: a conventional unit of atmospheric pressure: (fig.) any surrounding influence.—adjs. Atmospher′ic, -al, of or depending on the atmosphere.—adv. Atmospher′ically.—Atmospheric engine, a variety of steam-engine in which the steam is admitted only to the under side of the piston; Atmospheric hammer, a hammer driven by means of compressed air; Atmospheric railway, a railway where the motive-power is derived from the pressure of the atmosphere acting on a piston working in an iron tube of uniform bore. [Gr. atmos, air, sphaira, a sphere.]