- a quantity expressed as a root of another quantity.
- the set of elements of a ring, some power of which is contained in a given ideal.
- radical sign.
Origin of radical
SYNONYMS FOR radical
Latin rādix comes from wrād-, one of the variants of the Proto-Indo-European root wrād, werād, wred- “root, branch.” From this same variant Latin also has rāmus “branch” (the root, so to speak, of English ramify ); Greek has rhádix (stem rhádik- ) from the same variant. Another variant of the root is the possible source of Greek rhiza, source of English rhizome (Greek variants include Aeolic briza, brisda and Mycenaean wriza ). Wrād- regularly becomes wrōt- in proto-Germanic, the ultimate source of the English word root.
Examples from the Web for radical
But Brooke was out of step with the New Left and its notion of radical chic.Ed Brooke: The Senate's Civil Rights Pioneer and Prophet of a Post-Racial America|John Avlon|January 4, 2015|DAILY BEAST
He has become the most radical pope in modern memory for his economic populism.
Two hostages are dead and 15 others free after an Islamic radical took them hostage before police killed him.
The event grew out of an anti-consumerist action by the Danish radical theater collective Solvognen.Before the Bros, SantaCon Was as an Anti-Corporate Protest|David Freedlander|December 12, 2014|DAILY BEAST
Just last year, over 200 Nigerian girls were kidnapped from their school by the radical Islamist group Boko Haram.Promoting Girls’ Education Isn’t Enough: Malala Can Do More|Paula Kweskin|December 9, 2014|DAILY BEAST
Words are transformed in passing from language to language, and nevertheless retain their radical.Delsarte System of Oratory|Various
The military President who assumed power in 1876 was too radical to suit the clericals and too clerical to suit the radicals.The Hispanic Nations of the New World|William R. Shepherd
And yet we do all we can; the Radical Association tries to stir them up.The Bishop's Apron|W. Somerset Maugham
Mr. Roosevelt (this was said sub rosa) had not been too Radical, but too frank.Ten Years Near the German Frontier|Maurice Francis Egan
For reasons hereinafter fully set forth, I believe they have been somewhat too sweeping, and too radical.The Philippines: Past and Present (Volume 1 of 2)|Dean Conant Worcester
British Dictionary definitions for radical
Derived Formsradicalness, noun
Word Origin for radical
Medicine definitions for radical
Science definitions for radical
Culture definitions for radical (1 of 2)
In politics, someone who demands substantial or extreme changes in the existing system.