radical

phonetic symbol: / rǽdəkəl | rǽdɪkəl / 

radical - English Dictionary

[ noun ]
■ (linguistics) the form of a word after all affixes are removed
base , root , root word , stem , theme

[ noun ]
■ a character conveying the lexical meaning of a logogram

[ noun ]
■ a person who has radical ideas or opinions

[ noun ]
■ (mathematics) a quantity expressed as the root of another quantity

[ noun ]
■ (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
chemical group , group

[ noun ]
■ 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
e.g.)
・in the body free radicals are high-energy particles that ricochet wildly and damage cells
free radical

[ adjective ]
■ 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
e.g.)
・radical leaves
basal

[ adjective satellite ]
■ (used of opinions and actions) far beyond the norm
e.g.)
・radical opinions on education
extremist , ultra

[ adjective satellite ]
■ markedly new or introducing radical change
e.g.)
・radical political views
revolutionary

[ adjective satellite ]
■ arising from or going to the root or source
e.g.)
・a radical flaw in the plan

[ adjective ]
■ of or relating to or constituting a linguistic root
e.g.)
・a radical verb form

Word list en

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