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radical
has definitions from the fields of linguistics,mathematics,politics,chemistry,physics,botany
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[ adjective ] (used of opinions and actions) far beyond the norm
Examples "extremist political views" "radical opinions on education" "an ultra conservative" Used in print ("Editorials"...)No one who has studied the radical Right can suppose that words are their sole staple in trade . (John Michael Ray, "Rhode Island's Reactions...)Despite the opposition of the city newspapers , the Pratt_Hall meeting `` brought_together a very respectable audience , composed in part of those who had been distinguished for years for their radical views upon the subject of slavery , of many_of our colored citizens , and of those who were attracted to the place by the novelty of such a gathering '' . Related terms |
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[ noun ] (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
Synonyms Used in print (Francis J. Johnston and John E. Willard, "The...)It appears possible to set a lower_limit of about * * f for the activation_energy of the abstraction of a chlorine atom from a carbon_tetrachloride molecule by a chlorine atom to form * * f radical . The rate of the gas phase exchange reaction appears to be proportional to the first power of the absorbed light intensity indicating that the radical intermediates are removed at the walls or by reaction with an impurity rather than by bimolecular radical combination reactions . The rate of the gas phase exchange reaction appears to be proportional to the first power of the absorbed light intensity indicating that the radical intermediates are removed at the walls or by reaction with an impurity rather than by bimolecular radical combination reactions . Furthermore , the exchange would not be expected to be sensitive to trace amounts of impurities because it would not be apt to be a chain_reaction since the activation_energy for abstraction of chlorine by a chlorine atom would be expected to be too high ; also it would be expected that * * f would compete very effectively with any impurities as a scavenger for * * f radicals . Related terms substance unit methylene_group nitrate vinyl carboxyl cyano_group benzoyl_group hydroxyl uranyl alkyl allyl nitrite azo_group nitro_group acetyl azido_group glyceryl cacodyl propyl Butyl hydrazo_group ketone_group acyl alcohol_group aldehyde_group chromophore amino_group carbonyl_group benzyl molecule chemistry |
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[ adjective ] (politics) markedly new or introducing radical change
Synonyms Examples "a revolutionary discovery" "radical political views" Used in print (The Rev. John A. O'Brien, "Let's Take Birth Control...)For all concerned with social-welfare legislation , the significance of this radical and revolutionary change in the thought and habits of the vast majority of the American people is clear , profound and far reaching . (Irving Fineman, Woman of Valor: The Life of Henrietta...)She could not resist the opportunity `` of showing her superiority in argument over a man '' which she had remarked as one of the `` feminine follies '' of Sara_Sullam ; and in her forthright way , Henrietta , who in her story of Sara had indicated her own unwillingness `` to think_of men as the privileged '' and `` women as submissive and yielding '' , felt obliged to defend vigorously any statement of hers to which Morris_Jastrow took the slightest exception - he objected to her stand on the Corbin affair , as_well_as on the radical reforms of Dr._Wise of Hebrew_Union_College - until once , in sheer desperation , he wrote that he had given_up hope they would ever agree on anything . Related terms |
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[ noun ] (chemistry,physics) an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule
Synonyms Examples "in the body free radicals damage cells" Used in print (1961 Research Highlights of the National Bureau of...)This involves the application of a strong magnetic_field to the radical vapor , which shifts the low-frequency spectra to a conveniently high microwave range , where they may be measured with optimum sensitivity . The first diatomic hydride investigated by the paramagnetic resonance method was the OH radical . Preparations are being made for similar experiments on CH and SH radicals . Related terms |
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[ noun ] (politics) a person who has radical ideas or opinions
Used in print (William C. Smith, "Why Fear Ideas?"...)Attorney_General Palmer made a series of raids that sent more_than 4000 so-called radicals to the jails , in direct violation of their constitutional rights . |
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[ adjective ] (linguistics) of or relating to or constituting a linguistic root
Examples "a radical verb form" Related terms |
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[ noun ] (mathematics) a sign placed in front of an expression to denote that a root is to be extracted
Synonyms Related terms |
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