" atomic "

[Adjective]  | "atom*ic" | \ ə-ˈtä-mik \

1: of, relating to, or concerned with atoms

2: nuclear

3: marked by acceptance of the theory of atomism

Origin: 1678 ;

[Noun]  | "atomic bomb" 

1: a bomb whose violent explosive power is due to the sudden release of energy resulting from the splitting of nuclei of a heavy chemical element (such as plutonium or uranium) by neutrons in a very rapid chain reaction —called also atom bomb

2: a nuclear weapon (such as a hydrogen bomb)

Origin: 1914 ;

[Noun]  | "atomic clock" 

1: a precision clock that depends for its operation on an electrical oscillator regulated by the natural vibration frequencies of an atomic system (such as a beam of cesium atoms)

Origin: 1924 ;

[Noun]  | "atomic force microscope" 

1: an instrument used for mapping the atomic-scale topography of a surface by means of the repulsive electronic forces between the surface and the tip of a microscope probe moving above the surface —abbreviation AFM

Origin: 1986 ;

[Noun]  | "atomic layer deposition" 

1: a technique for depositing a film onto a surface in monolayers by utilizing a self-limiting chemical reaction

Origin: 1991 ;

[Noun]  | "atomic mass" 

1: the mass of an atom usually expressed in atomic mass units; also : atomic weight

Origin: 1848 ;

[Noun]  | "atomic mass unit" 

1: a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to 1/12 the mass of a single atom of the most abundant carbon isotope 12C —called also dalton

Origin: circa 1942 ;

[Noun]  | "atomic number" 

1: an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines the place of the element in the periodic table

Origin: 1913 ;

[Noun]  | "atomic reactor" 

1: reactor

Origin: 1942 ;

[Noun]  | "atomic theory" 

1: a theory of the nature of matter: all material substances are composed of minute particles or atoms of a comparatively small number of kinds and all the atoms of the same kind are uniform in size, weight, and other properties

2: any of several theories of the structure of the atom; especially : one based on experimentation and theoretical considerations holding that the atom is composed essentially of a small positively charged comparatively heavy nucleus surrounded by a comparatively large arrangement of electrons

Origin: 1738 ;

[Adjective]  | "atomic" 

[Noun]  | "atomic clock" 

[Noun]  | "atomic clocks"