FREE RADICAL

Meaning of FREE RADICAL in English

A free radical is a molecule with an odd number of electrons. Free radicals do not have a completed octet and often undergo vigorous redox reactions. Free radicals produced within cells can react with membranes, enzymes, and genetic material, damaging or even killing the cell. Free radicals have been implicated in a number of degenerative conditions, from natural aging to Alzheimer's disease.

General chemistry English glossary. Английский глоссарий общей химии. 2012

FREE RADICAL — noun Date: 1900 an especially reactive atom or group of atoms that has one or more unpaired electrons
Толковый словарь английского языка - Merriam Webster
FREE RADICAL — or radical electron . Most molecules contain even numbers of electrons, and their covalent bond s normally consist of shared …
Английский словарь Британика
FREE RADICAL — noun : an atom or a group of atoms [as triphenylmethyl (C 6 H 5 ) 3 C. or hydroxyl …
Webster's New International English Dictionary
FREE RADICAL — Chem., Biochem. an atom or molecule that bears an unpaired electron and is extremely reactive, capable of engaging in rapid …
Random House Webster's Unabridged English Dictionary
FREE RADICAL — Date: 1900 : an especially reactive atom or group of atoms that has one or more unpaired electrons ; especially …
Merriam-Webster's Collegiate English vocabulary
FREE RADICAL — Function: noun Date: 1900 : an especially reactive atom or group of atoms that has one or more unpaired electrons …
Merriam Webster Collegiate English Dictionary
FREE RADICAL — ■ noun Chemistry an uncharged molecule (typically highly reactive) having an unpaired valency electron.
Concise Oxford English vocab
FREE RADICAL — [free radical] n (1900): an esp. reactive atom or group of atoms that has one or more unpaired electrons
Merriam-Webster English vocab
FREE RADICAL — noun ( chemistry ) an atom or group of atoms that has an electron that is not part of a …
Oxford Advanced Learner's English Dictionary
FREE RADICAL — ˌfree ˈradical BrE AmE noun [countable] technical an atom or group of atoms with at least one free ↑ electron …
Longman Dictionary of Contemporary English
FREE RADICAL — ( free radicals) Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be …
Collins COBUILD Advanced Learner's English Dictionary
FREE RADICAL — (~s) Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause …
Collins COBUILD - Толковый словарь английского языка для изучающих язык
FREE RADICAL — noun EXAMPLES FROM CORPUS ▪ As a result, new classes of free radical are particularly interesting to chemists.
Longman DOCE5 Extras English vocabulary
FREE RADICAL — or radical Molecule containing at least one unpaired electron . Most molecules contain even numbers of electrons, and their covalent …
Britannica Concise Encyclopedia
FREE RADICAL — A highly reactive chemical that often contains oxygen and is produced when molecules are split to give products that have …
NCI English Dictionary of Cancer Terms
FREE RADICAL — a molecule that contains at least one unpaired electron. Free radicals (reactive oxygen species) are a byproduct of normal metabolism. …
AIDS English Glossary
FREE RADICAL — noun (Health and Fitness) An atom or group of atoms in which there is one or more unpaired electrons; an …
Английский разговорный словарь - Новые слова
FREE RADICAL — свободный радикал
Большой Англо-Русский словарь
FREE RADICAL — свободный радикал
Большой Англо-Русский политехнический словарь
FREE RADICAL — свободный радикал
Большой Англо-Русский политехнический словарь - РУССО
FREE RADICAL — хим. свободный радикал
Англо-Русский физический словарь
FREE RADICAL — свободный радикал
Новый Англо-Русский словарь по биологии
FREE RADICAL — свободный радикал
Новый Англо-Русский биологический словарь
FREE RADICAL — свободный радикал
Новый большой Англо-Русский словарь
RADICAL — adj radical (1. proceeding from the root; 2. reaching or affecting the root; 3. [Pol., Math., etc.]) n radical (1. …
Interlingua English vocab
RADICAL — I In politics, one who desires extreme change of part or all of the social order. The term (which derives …
Английский словарь Британика
FREE — [c mediumvioletred] (as used in expressions) free market economy North American Free Trade Agreement Free Territory of Trieste European Free …
Английский словарь Британика
RADICAL — I. ˈradə̇kəl, -dēk- adjective Etymology: Middle English, from Late Latin radicalis, from Latin radic-, radix root + -alis -al — …
Webster's New International English Dictionary
FREE — I. ˈfrē adjective ( fre·er ˈfrēə(r), ˈfri(ə)r, -iə ; fre·est ˈfrēə̇st) Etymology: Middle English fre, free, from Old English frēo; …
Webster's New International English Dictionary
RADICAL — (a.) Of or pertaining to a radix or root; as, a radical quantity; a radical sign. See below.
Английский словарь Webster
RADICAL — (a.) Hence: Of or pertaining to the root or origin; reaching to the center, to the foundation, to the ultimate …
Английский словарь Webster
RADICAL — ( n. ) A radical quantity. See under Radical, a.
Webster's Revised Unabridged English Dictionary
RADICAL — ( a. ) Hence: Of or pertaining to the root or origin; reaching to the center, to the foundation, to …
Webster's Revised Unabridged English Dictionary
RADICAL — — radicalness , n. /rad"i keuhl/ , adj. 1. of or going to the root or origin; fundamental: a radical …
Random House Webster's Unabridged English Dictionary
FREE — — freeness , n. /free/ , adj., freer, freest , adv., v., freed, freeing . adj. 1. enjoying personal rights …
Random House Webster's Unabridged English Dictionary
RADICAL — I. ˈra-di-kəl adjective Etymology: Middle English, from Late Latin radicalis, from Latin radic-, radix root — more at root Date: …
Merriam-Webster's Collegiate English vocabulary
FREE — I. ˈfrē adjective ( fre·er ; fre·est ) Etymology: Middle English, from Old English frēo; akin to Old High German …
Merriam-Webster's Collegiate English vocabulary
RADICAL — adj a radical vessel. ·see under radical, ·adj. 2. radical ·noun a radical quantity. ·see under radical, ·adj. 3. radical …
Webster English vocab
FREE — adv freely; willingly. 2. free ·adj to frank. 3. free ·adv without charge; as, children admitted free. 4. free ·superl …
Webster English vocab
RADICAL — [rad.i.cal] adj [ME, fr. LL radicalis, fr. L radic-, radix root--more at root] (14c) 1: of, relating to, or proceeding …
Merriam-Webster English vocab
RADICAL — in politics, one who desires extreme change of part or all of the social order. The word was first used …
Britannica English vocabulary
FREE — free BrE AmE friː ▷ freed friːd ▷ freeing ˈfriː ɪŋ ▷ freely ˈfriː li ▷ freer ˈfri ː ‿ə …
Longman Pronunciation English Dictionary
RADICAL — / ˈrædɪkl; NAmE / adjective , noun ■ adjective [ usually before noun ] 1. concerning the most basic and …
Oxford Advanced Learner's English Dictionary
FREE — / friː; NAmE / adjective , verb , adverb ■ adjective ( freer / ˈfriːə(r); NAmE / freest / ˈfriːɪst; …
Oxford Advanced Learner's English Dictionary
RADICAL — I. rad ‧ i ‧ cal 1 W3 AC /ˈrædɪk ə l/ BrE AmE adjective [ Word Family: noun : …
Longman Dictionary of Contemporary English
FREE — I. free 1 S1 W1 /friː/ BrE AmE adjective [ Word Family: noun : ↑ freebie , ↑ freedom ; …
Longman Dictionary of Contemporary English
RADICAL — adj. & n. --adj. 1 of the root or roots; fundamental (a radical error). 2 far-reaching; thorough; going to the …
Английский основной разговорный словарь
FREE — adj., adv., & v. --adj. (freer; freest) 1 not in bondage to or under the control of another; having personal …
Английский основной разговорный словарь
RADICAL — adj. & n. adj. 1 of the root or roots; fundamental (a radical error). 2 far-reaching; thorough; going to the …
Concise Oxford English Dictionary
FREE — adj., adv., & v. adj. (freer; freest) 1 not in bondage to or under the control of another; having personal …
Concise Oxford English Dictionary
RADICAL — adj. & n. --adj. 1. of the root or roots; fundamental (a radical error). 2 far-reaching; thorough; going to the …
Oxford English vocab
FREE — adj., adv., & v. --adj. (freer; freest) 1. not in bondage to or under the control of another; having personal …
Oxford English vocab
RADICAL — ( radicals) Frequency: The word is one of the 1500 most common words in English. 1. Radical changes and differences …
Collins COBUILD Advanced Learner's English Dictionary
FREE — ( freer, freest, frees, freeing, freed) Frequency: The word is one of the 700 most common words in English. 1. …
Collins COBUILD Advanced Learner's English Dictionary
RADICAL — I. adjective COLLOCATIONS FROM OTHER ENTRIES dramatic/drastic/radical (= very big, especially in way that is surprising ) ▪ The Industrial …
Longman DOCE5 Extras English vocabulary
FREE — I. adjective COLLOCATIONS FROM OTHER ENTRIES (a) free choice ▪ Students have an entirely free choice of what to study …
Longman DOCE5 Extras English vocabulary
RADICAL — n. free radical Radical Republican Radical Socialist Party
Britannica Concise Encyclopedia
FREE — adj. free enterprise system free market economy North American Free Trade Agreement Free Territory of Trieste European Free Trade Association …
Britannica Concise Encyclopedia
RADICAL — Synonyms and related words : Bolshevik, Bolshevist, Fabian, Gospel side, IC analysis, Jacobin, Kekule formula, Wobbly, ab ovo, aboriginal, absolute, …
Moby Thesaurus English vocabulary
FREE
Longman Activator English vocab
RADICAL — n. 25B6; adjective radical reform : THOROUGHGOING, thorough, complete, total, comprehensive, exhaustive, sweeping, far-reaching, wide-ranging, extensive, profound, major, stringent, rigorous. …
Concise Oxford Thesaurus English vocabulary
RADICAL — adj. 1 basic, fundamental, elementary, inherent, constitutional, elemental, essential, cardinal, principal, primary, deep, deep-seated, profound, underlying, organic, natural, rudimentary There …
Oxford Thesaurus English vocab
FREE — adj. 1 at liberty, unfettered, unchained, unshackled, unconfined, untrammelled, unencumbered, unrestrained, unrestricted, unconstrained, uncontrolled, free-born, independent, self-governing, self-governed, self-ruling, autonomous, …
Oxford Thesaurus English vocab
-FREE — combining form (Environment) (Health and Fitness) (Lifestyle and Leisure) As the second element in a hyphenated adjective: not containing or …
Английский разговорный словарь - Новые слова

General Chemistry English Glossary

← FREE ENERGY

FREEZING POINT (STANDARD MELTING POINT; NORMAL MELTING POINT; MELTING POINT)→