radical
nouns
(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that 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"
a person who has radical ideas or opinions
(mathematics) a quantity expressed as the root of another quantity
a character conveying the lexical meaning of a logogram
is a part of
a graphic character that indicates the meaning of a thing without indicating the sounds used to say it
"Chinese characters are ideograms"
is a type of (narrower)
a written symbol that is used to represent speech
"the Greek alphabet has 24 characters"
adjectives
(used of opinions and actions) far beyond the norm
"extremist political views"; "radical opinions on education"; "an ultra conservative"
markedly new or introducing radical change
"a revolutionary discovery"; "radical political views"
arising from or going to the root or source
"a radical flaw in the plan"
is similar to
pertaining to or constituting a base or basis
"a basic fact"; "the basic ingredients"; "basic changes in public opinion occur because of changes in priorities"
of or relating to or constituting a linguistic root
"a radical verb form"
pertains to
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