radical.

تعريف radical. في الإنجليزية الإنجليزية القاموس.: rad; A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism); In logographic writing systems as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic; Of or pertaining to the intrinsic nature of something; In Semitic languages, any one of the set of consonants (typically three) that make up a root; A person with radical opinions; A free radical; A root (of a number or quantity); Involving free radicals; Thoroughgoing
The spread of the cancer required radical surgery, and the entire organ was removed.; Of or pertaining to the root of a word; Excellent
That was a radical jump!.; Of or pertaining to a root (of a plant); Favouring fundamental change, or change at the root cause of a matter
His beliefs are radical.; one who holds extreme views or advocates extreme measures; {i} person with extreme political views; root of a number (Mathematics); {s} having extreme political views; fundamental, pertaining to a root; advocating complete reform; an atom or group of atoms with at least one unpaired electrons; (used of opinions and actions) far beyond the norm; "extremist political views"; "radical opinions on education"; "an ultra conservative"; Specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are conveniently regarded as playing the part of a single atom; a residue; called also a compound radical; Relating, or belonging, to the root, or ultimate source of derivation; as, a radical verbal form; A primitive letter; a letter that belongs to the radix; Growing from or pertaining to a root; growing from a non-aerial stem; Hence: Of or pertaining to the root or origin; reaching to the center, to the foundation, to the ultimate sources, to the principles, or the like; original; fundamental; thorough-going; unsparing; extreme; as, radical evils; radical reform; a radical party; arising from or going to the root; "a radical flaw in the plan"; a sign placed in front of an expression to denote that a root is to be extracted a character conveying the lexical meaning of a logogram a person who has radical ideas or opinions especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem; "basal placentation"; "radical leaves"; A structure with an unpaired electron (but excluding certain metal ions) In organic molecules, a radical is often associated with a highly reactive site of reduced valence (see °doublet) The term radical is sometimes used to describe a substructure within a molecule; the term free radical then describes a radical in this sense, viewed as the result of cleaving the bond linking the substructure to the rest of the molecule; especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem; "basal placentation"; "radical leaves"; The initial root formed after seed germination This primary (or first) root produces first-order lateral roots The primary root eventually becomes the tap root of the plant; a person who advocates sweeping changes in the laws and methods of government with the least delay; The root of a quantity as indicated by the sign; A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics; Meaning "root", radical is normally used to mean a natal horoscope for living beings or any other kind of base horoscope, for example an electional or event chart drawn for the birth or start time The term Radix is sometimes used instead Typically used to distinguish radical positions from progressed or transitting positions; Afeggag; A radical quantity; A component of a Han character (Hanzi) which designates one of a number of semantic categories The traditional number of such radicals is 214; In English politics, a member of the more extreme wing of the Whig or Liberal Parties Used after 1797 as a term covering all those who supported the movement for parliamentary reform After the passing of the Reform bill of 1832, a number of radicals, dissatisfied with the extent of its reform, kept continual but ineffective pressure on the Whigs to extend the franchise to the working class Organized members of the working class were not in sympathy with them, due to their support of the Poor Law of 1834 and their hostility to the Chartists Their influence declined between 1839 and 1850, but revived with the disappearance of Chartism after 1850 They were active in promoting reform of the suffrage, achieved between 1867 and 1884; Very good; to be excellent; a root sign; Radical changes and differences are very important and great in degree. The country needs a period of calm without more surges of radical change The Football League has announced its proposals for a radical reform of the way football is run in England. = fundamental + radically radi·cal·ly two large groups of people with radically different beliefs and cultures. = fundamentally; Slang: Extremely incredible; A radical is a square root sign and looks like this: Most calculators have a on one of the keys; A primitive word; a radix, root, or simple, underived, uncompounded word; an etymon; of or relating to or constituting a linguistic root; "a radical verb form"; See under Radical, a; markedly new or introducing radical change; "a revolutionary discovery"; "radical political views"; Cf; A characteristic, essential, and fundamental constituent of any compound; hence, sometimes, an atom; Residue; A radical is the positive part of the n-th root of a quantity Examples: , , These may be simplified as 4, 3, 5x A fraction with radicals in the denominator may be changed to an equivalent fraction without radicals in the denominator by rationalizing the denominator; In such logographic writing systems as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning; contrasted with phonetic; One who advocates radical changes in government or social institutions, especially such changes as are intended to level class inequalities; opposed to conservative; A radical is a symbol traditionally used to denote square roots, cube roots, etc A radical function is the inverse of a (restricted) power function with positive integer power; a character conveying the lexical meaning of a logogram; Person with radical opinions; Favouring fundamental change, or change at the root cause of the matter; Political viewpoint with origins in Western Europe during the 19th century; advocated broader voting rights than liberals; in some cases advocated outright democracy; urged reforms in favor of the lower classes (p 703); A group of atoms, joined by covalent bonds, that take part in reactions as a single unit; A radical vessel; a molecule with an odd number of electrons Radicals do not have a completed octet and often undergo vigorous redox reactions Radicals produced within cells can react with membranes, enzymes, and genetic material, damaging or even killing the cell Radicals have been implicated in a number of degenerative conditions, from natural aging to Alzheimer's disease; A group of atoms that is capable of remaining unchanged during a series of chemical reactions Such combinations (radicals) exist in the molecules of many organic compounds; sulfate (SO42-) is an inorganic radical; A political extremist, mostly to the left, advocates a complete change of the system; (chemistry) two or more atoms bound together as a single unit and forming part of a molecule; Radical people believe that there should be great changes in society and try to bring about these changes. threats by left-wing radical groups to disrupt the proceedings. conservative A radical is someone who has radical views. someone who has new and different ideas, especially someone who wants complete social and political change conservative. Term used in chemistry with one predominant and two subsidiary, looser meanings. It most often refers to a free radical. It can also mean an ion or a functional group. In politics, one who desires extreme change of part or all of the social order. The term (which derives from the Latin word for "root," and thus implies change beginning at a system's roots) was given this sense by Charles James Fox in 1797 when he demanded "radical reform" consisting of universal manhood suffrage. In France before 1848, republicans and advocates of universal male suffrage were called radicals. The term was later applied to Marxists (see Marxism) who called for fundamental social change to eradicate divisions among social classes. In popular usage, it is applied to political extremism, not necessarily violent, of both the left and the right. free radical Radical Republican Radical Socialist Party; 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; "in the body free radicals are high-energy particles that ricochet wildly and damage cells"; Proceeding from a rootlike stem, or one which does not rise above the ground; as, the radical leaves of the dandelion and the sidesaddle flower; A structural component of a Han character conventionally used for indexing The traditional number of such radicals is 214; Thorough going or fundamental; A man with both feet planted firmly in the air Franklin Delano Roosevelt; An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)