accelerator particle accelerator atom smasher | a scientific instrument that increases the kinetic energy of charged particles |
alpha blocker alpha-blocker alpha-adrenergic blocker alpha-adrenergic blocking agent | any of various drugs that block alpha-adrenergic receptors, used in treating benign prostatic hyperplasia, relaxes the muscles of the prostate and bladder |
alpha-interferon | a form of interferon that is produced endogenously and commercially for its pharmacological effects (including regulation of the immune system and antiviral and antineoplastic effects) |
fiberboard fibreboard particle board | wallboard composed of wood chips or shavings bonded together with resin and compressed into rigid sheets |
methyldopa alpha methyl dopa Aldomet | antihypertensive drug (trade name Aldomet) used in the treatment of high blood pressure |
particle detector | a chamber in which particles can be made visible |
duality wave-particle duality | (physics) the property of matter and electromagnetic radiation that is characterized by the fact that some properties can be explained best by wave theory and others by particle theory |
alpha receptor alpha-adrenergic receptor alpha-adrenoceptor | receptors postulated to exist on nerve cell membranes of the sympathetic nervous system in order to explain the specificity of certain agents that affect only some sympathetic activities (such as vasoconstriction and relaxation of intestinal muscles and contraction of smooth muscles) |
alpha test | (computer science) a first test of an experimental product (such as computer software) carried out by the developer |
particle physics high-energy physics high energy physics | the branch of physics that studies subatomic particles and their interactions |
alpha privative | the negative prefix a- or un- |
particle | a function word that can be used in English to form phrasal verbs |
alpha software | a first release of a software product that is usually tested only by the developers |
alpha and omega | the basic meaning of something, the crucial part |
alpha | the st letter of the Greek alphabet |
alpha | the beginning of a series or sequence, the Alpha and Omega, the first and the last, the beginning and the end--Revelations |
Alpha Centauri Rigil Kent Rigil | brightest star in Centaurus, second nearest star to the sun |
Alpha Crucis | the brightest star in the Southern Cross |
alpha particle | a positively charged particle that is the nucleus of the helium atom, emitted from natural or radioactive isotopes |
antitauon tau-plus particle | an antilepton of very great mass |
baryon heavy particle | any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions, a hadron with a baryon number of |
beta particle | a high-speed electron or positron emitted in the decay of a radioactive isotope |
Betelgeuse Alpha Orionis | the second brightest star in Orion |
Castor Alpha Geminorum | a multiple star with components, second brightest in Gemini, close to Pollux |
elementary particle fundamental particle | (physics) a particle that is less complex than an atom, regarded as constituents of all matter |
J particle psi particle | a neutral meson with a large mass |
kaon kappa-meson k-meson K particle | an unstable meson produced as the result of a high-energy particle collision |
lambda particle lambda hyperon | an electrically neutral baryon with isotopic spin |
particle subatomic particle | a body having finite mass and internal structure but negligible dimensions |
strange particle | an elementary particle with non-zero strangeness |
tauon tau-minus particle | a lepton of very great mass |
weakly interacting massive particle WIMP | a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation, postulated as a constituent of the dark matter of the universe |
alpha radiation alpha ray | the radiation of alpha particles during radioactive decay |
alpha rhythm alpha wave | the normal brainwave in the electroencephalogram of a person who is awake but relaxed, occurs with a frequency of - hertz |
particle beam | a collimated flow of particles (atoms or electrons or molecules) |
alpha decay | radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particle |
small-particle pollution | air pollution caused by fine particles of soot (as from power plants or diesel engines) |
atom molecule particle corpuscle mote speck | (nontechnical usage) a tiny piece of anything |
dispersed phase dispersed particles | (of colloids) a substance in the colloidal state |
alpha-linolenic acid | a polyunsaturated fatty acid with carbon atoms, the only omega- fatty acid found in vegetable products, it is most abundant in canola oil, a fatty acid essential for nutrition |
alpha-naphthol | an isomer of naphthol used in dyes |
alpha-naphthol test Molisch's test Molisch test Molisch reaction | biochemical indicator of the presence of carbohydrates in a solution, if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid |
alpha-beta brass Muntz metal yellow metal | a brass that has more zinc and is stronger than alpha brass, used in making castings and hot-worked products |
alpha brass | an alloy of brass and zinc, used mainly for cold working |
alpha bronze | an alloy of copper and tin that can be worked |
alpha iron | a magnetic allotrope of iron, stable belowdegrees centigrade |
alpha-tocopheral | a potent form of vitamin E obtained from germ oils or by synthesis |
alpha globulin | a globulin in blood plasma or serum that is alkaline and has great electrophoretic mobility |
high-density lipoprotein HDL alpha-lipoprotein | a lipoprotein that transports cholesterol in the blood, composed of a high proportion of protein and relatively little cholesterol, high levels are thought to be associated with decreased risk of coronary heart disease and atherosclerosis |
identification particle | a tiny particle of material that can be added to a product to indicate the source of manufacture |