reaction

  • 1 gut reaction — {n. phr.} A mental or physical response that springs from one s depths. * /My gut reaction was to get out of here as fast as possible./ …

    Dictionary of American idioms

  • 2 gut reaction — {n. phr.} A mental or physical response that springs from one s depths. * /My gut reaction was to get out of here as fast as possible./ …

    Dictionary of American idioms

  • 3 Alkaline reaction — Alkaline Al ka*line (?; 277), a. [Cf. F. alcalin.] Of or pertaining to an alkali or to alkalies; having the properties of an alkali. [1913 Webster] {Alkaline earths}, certain substances, as lime, baryta, strontia, and magnesia, possessing some of …

    The Collaborative International Dictionary of English

  • 4 Blowpipe reaction — Blowpipe Blow pipe , n. 1. A tube for directing a jet of air into a fire or into the flame of a lamp or candle, so as to concentrate the heat on some object. [1913 Webster] Note: It is called a mouth blowpipe when used with the mouth; but for… …

    The Collaborative International Dictionary of English

  • 5 Flame reaction — Flame Flame (fl[=a]m), n. [OE. flame, flaume, flaumbe, OF. flame, flambe, F. flamme, fr. L. flamma, fr. flamma, fr. flagrare to burn. See {Flagrant}, and cf. {Flamneau}, {Flamingo}.] 1. A stream of burning vapor or gas, emitting light and heat;… …

    The Collaborative International Dictionary of English

  • 6 Knee jerk reaction — an immediate unthinking emotional reaction produced by an event or statement to which the reacting person is highly sensitive; in persons with strong feelings on a topic, it may be very predictable. [PJC] …

    The Collaborative International Dictionary of English

  • 7 nuclear fusion reaction — uclear fusion reaction n. A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy. Syn: fusion, nuclear fusion. [WordNet 1.5] …

    The Collaborative International Dictionary of English

  • 8 nuclear reaction — uclear reaction n. A process that alters the energy or structure or composition of an atomic nucleus. [WordNet 1.5] …

    The Collaborative International Dictionary of English

  • 9 Reaction — Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of chemical …

    The Collaborative International Dictionary of English

  • 10 Reaction time — Reaction Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of …

    The Collaborative International Dictionary of English

  • 11 Reaction wheel — Reaction Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of …

    The Collaborative International Dictionary of English

  • 12 reaction wheel — Water wheel Wa ter wheel 1. Any wheel for propelling machinery or for other purposes, that is made to rotate by the direct action of water; called an {overshot wheel} when the water is applied at the top, an {undershot wheel} when at the bottom,… …

    The Collaborative International Dictionary of English

  • 13 Widal reaction — Widal s test Wi*dal s test, or Widal test Wi*dal test or Widal reaction Wi*dal reaction . [After Fernand Widal (b. 1862), French physician.] (Med.) A test for typhoid fever based on the fact that blood serum of one affected, in a bouillon culture …

    The Collaborative International Dictionary of English

  • 14 alarm reaction — noun Date: 1936 the initial reaction of an organism (as increased hormonal activity) to stress …

    New Collegiate Dictionary

  • 15 chain reaction — noun Date: circa 1902 1. a. a series of events so related to each other that each one initiates the next b. a number of events triggered by the same initial event 2. a self sustaining chemical or nuclear reaction yielding energy or …

    New Collegiate Dictionary

  • 16 cross-reaction — noun Date: 1946 reaction of one antigen with antibodies developed against another antigen • cross react intransitive verb • cross reactive adjective • cross reactivity noun …

    New Collegiate Dictionary

  • 17 Maillard reaction — noun Etymology: Louis Camille Maillard died 1936 French biochemist Date: 1929 a nonenzymatic reaction between sugars and proteins that occurs upon heating and that produces browning of some foods (as meat and bread) …

    New Collegiate Dictionary

  • 18 reaction — noun Date: circa 1611 1. a. the act or process or an instance of reacting b. resistance or opposition to a force, influence, or movement; especially tendency toward a former and usually outmoded political or social order or policy 2. a response… …

    New Collegiate Dictionary

  • 19 Wassermann reaction — noun Etymology: August von Wassermann Date: 1911 the complement fixing reaction that occurs in a positive complement fixation test for syphilis …

    New Collegiate Dictionary

  • 20 RÉACTION — s. f. T. de Physiq. Action d un corps sur un autre qui agit ou vient d agir sur lui. La réaction est toujours égale à l action.   Il se dit, figurément, en parlant D un parti opprimé qui se venge et agit à son tour. Il faut, dans un État,… …

    Dictionnaire de l'Academie Francaise, 7eme edition (1835)


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