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