energy

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Definition/MeaningWord/Phrase
nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) A-bomb , atom bomb , atomic bomb , fission bomb , plutonium bomb
(cryogenics) the lowest temperature theoretically attainable (at which the kinetic energy of atoms and molecules is minimal); 0 Kelvin or -273.15 centigrade or -459.67 Fahrenheit absolute zero
measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber absorptance , absorption coefficient , coefficient of absorption
(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium absorption
scientific instrument that increases the kinetic energy of charged particles accelerator , atom smasher , particle accelerator
distribution of energy as a function of frequency for a particular sound source acoustic spectrum , sound spectrum
activity of causing to have energy and be active activating , activation , energizing
energy that an atomic system must acquire before a process (such as an emission or reaction) can occur activation energy , energy of activation
transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy active transport
ester of adenosine that is converted to ATP for energy storage adenosine diphosphate , ADP
nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions adenosine triphosphate , ATP
kind of body tissue containing stored fat that serves as a source of energy; it also cushions and insulates vital organs adipose tissue , fat , fatty tissue
former executive agency (from 1946 to 1974) that was responsible for research into atomic energy and its peacetime uses in the United States AEC , Atomic Energy Commission
generator that extracts usable energy from winds aerogenerator , wind generator , windmill
physicist born in Germany who formulated the special theory of relativity and the general theory of relativity; Einstein also proposed that light consists of discrete quantized bundles of energy (later called photons) (1879-1955) Albert Einstein , Einstein
trade name for an alloy used to make high-energy permanent magnets; contains aluminum and iron and nickel plus cobalt or copper or titanium Alnico
energy derived from sources that do not use up natural resources or harm the environment alternative energy
central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression amphetamine , pep pill , speed , upper
synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy anabolism , constructive metabolism
lack of energy anergy
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