noun
(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
Synonyms
noun
an atom or group of atoms with at least one unpaired electron
Synonyms
free radical
Examples
- 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
noun
a person who has radical ideas or opinions
noun
(mathematics) a quantity expressed as the root of another quantity
noun
a character conveying the lexical meaning of a logogram
noun
(linguistics) the form of a word after all affixes are removed
Synonyms
Examples
- thematic vowels are part of the stem
adjective
(used of opinions and actions) far beyond the norm
Synonyms
Examples
- extremist political views
- radical opinions on education
- an ultra conservative
adjective
markedly new or introducing radical change
Synonyms
Examples
- a revolutionary discovery
- radical political views
adjective
arising from or going to the root or source
Examples
- a radical flaw in the plan
adjective
of or relating to or constituting a linguistic root
Examples
- a radical verb form
adjective
especially of leaves
Synonyms
Examples
- 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