Radical — synonyms, radical antonyms, definition

1. radical (a)

aberrant advanced agitator basic complete comprehensive constitutional contentious deranged die-hard discourteous dissident entire essential excessive extravagant extreme extremist fanatic fanatical • • •

2. radical (Noun)

Bolshevik activist agitator anarchist atheist base beatnik bohemian bolshevist catalyst chemical group collectivist commie complainer demonstrator die-hard disputant dissenter dissident eccentric • • •

radical (Noun) — (chemistry) two or more atoms bound together as a single unit and forming part of a molecule.

radical (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. ex. "in the body free radicals are high-energy particles that ricochet wildly and damage cells"

radical (Noun) — A person who has radical ideas or opinions.

radical (Noun) — (mathematics) a quantity expressed as the root of another quantity.

radical (Noun) — A character conveying the lexical meaning of a logogram.

radical (Noun) — (linguistics) the form of a word after all affixes are removed. ex. "thematic vowels are part of the radical"

amount atom building block character descriptor form grapheme graphic symbol individual measure mortal person quantity signifier somebody someone soul unit word form Bolshevik Nihilist Trotskyist Trotskyite acyl acyl group alcohol group alcohol radical aldehyde group aldehyde radical alkyl alkyl group alkyl radical allyl allyl group allyl radical amino amino group amyl anarchist • • • ideogram ideograph molecule

3. radical (Adjective)

basal ultra cauline

radical (Adjective) — (used of opinions and actions) far beyond the norm. ex. "radical opinions on education"

radical (Adjective) — Markedly new or introducing fundamental change. ex. "radical political views"

radical (Adjective) — Arising from or going to the root or source. ex. "a radical flaw in the plan"

radical (Adjective) — (linguistics) of or relating to or constituting a linguistic root. ex. "a radical verb form"

radical (Adjective) — (botany) 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. ex. "radical leaves"