English dictionary
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English adjective: radical | |||
| 1. | radical (used of opinions and actions) far beyond the norm | ||
| Samples | Extremist political views. Radical opinions on education. An ultra conservative. | ||
| Synonyms | extremist, ultra | ||
| Similar | immoderate | ||
| Antonyms | moderate | ||
| 2. | radical markedly new or introducing radical change | ||
| Samples | A revolutionary discovery. Radical political views. | ||
| Synonyms | revolutionary | ||
| Similar | new | ||
| Antonyms | old | ||
| 3. | radical arising from or going to the root or source | ||
| Samples | A radical flaw in the plan. | ||
| Similar | basic | ||
| Antonyms | incidental, incident | ||
| 4. | radical of or relating to or constituting a linguistic root | ||
| Samples | A radical verb form. | ||
| Domain category | linguistics | ||
| 5. | radical 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 | ||
| Samples | Basal placentation. Radical leaves. | ||
| Synonyms | basal | ||
| Domain category | botany, phytology | ||
| Antonyms | cauline | ||
English noun: radical | |||
| 1. | radical (substance) (chemistry) two or more atoms bound together as a single unit and forming part of a molecule | ||
| Synonyms | chemical group, group | ||
| Broader (hypernym) | building block, unit | ||
| Narrower (hyponym) | 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, arsenic group, azido group, azido radical, azo group, azo radical, benzoyl group, benzoyl radical, benzyl, benzyl group, benzyl radical, butyl, cacodyl, cacodyl group, cacodyl radical, carbonyl group, carboxyl, carboxyl group, chromophore, cyanide group, cyanide radical, cyano group, cyano radical, glyceryl, hydrazo group, hydrazo radical, hydroxyl, hydroxyl group, hydroxyl radical, ketone group, methylene, methylene group, methylene radical, nitrite, nitro group, propyl, propyl group, propyl radical, uranyl, uranyl group, uranyl radical, vinyl, vinyl group, vinyl radical | ||
| Part meronym | molecule | ||
| Domain category | chemical science, chemistry | ||
| 2. | radical (substance) 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 | ||
| Samples | In the body free radicals are high-energy particles that ricochet wildly and damage cells. | ||
| Synonyms | free radical | ||
| Broader (hypernym) | atom | ||
| 3. | radical (person) a person who has radical ideas or opinions | ||
| Broader (hypernym) | individual, mortal, person, somebody, someone, soul | ||
| Narrower (hyponym) | anarchist, Bolshevik, bolshie, bolshy, extremist, leveler, leveller, Marxist, nihilist, red, revolutionary, revolutionist, subversive, subverter, syndicalist, terrorist, Trot, Trotskyist, Trotskyite, Wobbly, young Turk | ||
| 4. | radical (quantity) (mathematics) a quantity expressed as the root of another quantity | ||
| Broader (hypernym) | amount, measure, quantity | ||
| Domain category | math, mathematics, maths | ||
| 5. | radical (communication) a character conveying the lexical meaning of a logogram | ||
| Broader (hypernym) | character, grapheme, graphic symbol | ||
| Part meronym | ideogram, ideograph | ||
| 6. | radical (communication) (linguistics) the form of a word after all affixes are removed | ||
| Samples | Thematic vowels are part of the stem. | ||
| Synonyms | base, root, root word, stem, theme | ||
| Broader (hypernym) | descriptor, form, signifier, word form | ||
| Domain category | linguistics | ||
Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
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Web design: Orcapia v/Per Bang. English edition: .
2024 onlineordbog.dk