 radical |
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| 1. | [ adjective ] (used of opinions and actions) far beyond the norm | |
| Synonyms: | ultra extremist | |
| Examples: | "extremist political views" "radical opinions on education" "an ultra conservative" |
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| Related terms: | immoderate | |
| 2. | [ noun ] (chemistry) two or more atoms bound together as a single unit and forming part of a molecule | |
| Synonyms: | group chemical_group | |
| Related terms: | substance unit methylene_group nitrate vinyl carboxyl cyano_group benzoyl_group hydroxyl uranyl alkyl allyl nitrite azo_group nitro_group acetyl azido_group glyceryl cacodyl propyl Butyl hydrazo_group ketone_group acyl alcohol_group aldehyde_group chromophore amino_group carbonyl_group benzyl molecule chemistry | |
| 3. | [ adjective ] (politics) markedly new or introducing radical change | |
| Synonyms: | revolutionary | |
| Examples: | "a revolutionary discovery" "radical political views" |
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| Related terms: | new | |
| 4. | [ noun ] (chemistry,physics) an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule | |
| Synonyms: | free_radical | |
| Examples: | "in the body free radicals damage cells" |
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| Related terms: | atom | |
| 5. | [ noun ] (politics) a person who has radical ideas or opinions | |
| Related terms: | person disputant anarchist Bolshevik terrorist trot Young_Turk revolutionist leveler wobbly extremist | |
| 6. | [ adjective ] arising from or going to the root | |
| Synonyms: | root | |
| Examples: | "a radical flaw in the plan" |
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| Related terms: | basic | |
| 7. | [ adjective ] (linguistics) of or relating to or constituting a linguistic root | |
| Examples: | "a radical verb form" |
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| Related terms: | linguistics root | |
| 8. | [ noun ] (mathematics) a sign placed in front of an expression to denote that a root is to be extracted | |
| Synonyms: | radical_sign | |
| Related terms: | mathematical_notation | |
| 9. | [ 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 | |
| Synonyms: | basal | |
| Examples: | "basal placentation" "radical leaves" |
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| Related terms: | cauline botany | |
| 10. | [ noun ] (linguistics) a character conveying the lexical meaning of a logogram | |
| Related terms: | character ideogram | |
| 11. | [ noun ] (linguistics) the form of a word after all affixes are removed | |
| Synonyms: | stem root theme base root_word | |
| Examples: | "thematic vowels are part of the stem" |
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| Related terms: | form linguistics | |
| Similar spelling: |
radically radicalism radicle |
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