Definitions for Radical
ˈræd ɪ kəlrad·i·cal
This dictionary definitions page includes all the possible meanings, example usage and translations of the word Radical.
group, radical, chemical groupnoun
(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
free radical, radicalnoun
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"
a person who has radical ideas or opinions
(mathematics) a quantity expressed as the root of another quantity
a character conveying the lexical meaning of a logogram
root, root word, base, stem, theme, radicaladjective
(linguistics) the form of a word after all affixes are removed
"thematic vowels are part of the stem"
extremist, radical, ultraadjective
(used of opinions and actions) far beyond the norm
"extremist political views"; "radical opinions on education"; "an ultra conservative"
markedly new or introducing radical change
"a revolutionary discovery"; "radical political views"
arising from or going to the root or source
"a radical flaw in the plan"
of or relating to or constituting a linguistic root
"a radical verb form"
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"
A member of the most progressive wing of the Liberal Party; someone favouring social reform (but generally stopping short of socialism).
A member of an influential, centrist political party favouring moderate social reform, a republican constitution, and secular politics.
A person with radical opinions.
A root (of a number or quantity).
In logographic writing systems as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic.
In Semitic languages, any one of the set of consonants (typically three) that make up a root.
A group of atoms, joined by covalent bonds, that take part in reactions as a single unit.
A free radical.
Favouring fundamental change, or change at the root cause of a matter.
His beliefs are radical.
Of or pertaining to a root .
Of or pertaining to the intrinsic nature of something.
The spread of the cancer required radical surgery, and the entire organ was removed.
Of or pertaining to the root of a word.
Involving free radicals
That was a radical jump!
Etymology: From radical, from radicalis, from radix; see radix.
Samuel Johnson's Dictionary
Etymology: radical, Fr. from radix, Latin.
The differences, which are secondary and proceed from these radical differences, are, plants are all figurate and determinate, which inanimate bodies are not. Francis Bacon.
Such a radical truth, that God is, springing up together with the essence of the soul, and previous to all other thoughts, is not pretended to by religion. Richard Bentley.
The emission of the loose and adventitious moisture doth betray the radical moisture, and carrieth it for company. Francis Bacon.
If the radical moisture of gold were separated, it might be contrived to burn without being consumed. John Wilkins.
The sun beams render the humours hot, and dry up the radical moisture. Arbuthnot.
In a general context, "radical" can have different meanings depending on the subject it is related to: 1. In general terms, it refers to something that advocates for complete social or political reform, representing extreme views, principles or ways of behaving. 2. In mathematics, a radical refers to a symbol that represents the root of a number, typically √. 3. In chemistry, it is used to describe an atom, molecule or ion that possesses unpaired valence electrons. 4. In linguistics, a radical is the part of a word that cannot be reduced any further into smaller components. 5. In botany, the term is used to describe the lower part of a plant embryo— the embryonic root. 6. In literature, a radical is an element of a word or language that inherently defines the word's main semantic characteristics. Each specific field of study may have its own specific definition of "radical", usually implying a central, fundamental or essential component, a drastic difference or deviation from tradition or accepted norms, or something relating to roots or origins.
of or pertaining to the root; proceeding directly from the root
hence: Of or pertaining to the root or origin; reaching to the center, to the foundation, to the ultimate sources, to the principles, or the like; original; fundamental; thorough-going; unsparing; extreme; as, radical evils; radical reform; a radical party
belonging to, or proceeding from, the root of a plant; as, radical tubers or hairs
proceeding from a rootlike stem, or one which does not rise above the ground; as, the radical leaves of the dandelion and the sidesaddle flower
relating, or belonging, to the root, or ultimate source of derivation; as, a radical verbal form
of or pertaining to a radix or root; as, a radical quantity; a radical sign. See below
a primitive word; a radix, root, or simple, underived, uncompounded word; an etymon
a primitive letter; a letter that belongs to the radix
one who advocates radical changes in government or social institutions, especially such changes as are intended to level class inequalities; -- opposed to conservative
a characteristic, essential, and fundamental constituent of any compound; hence, sometimes, an atom
specifically, a group of two or more atoms, not completely saturated, which are so linked that their union implies certain properties, and are conveniently regarded as playing the part of a single atom; a residue; -- called also a compound radical. Cf. Residue
a radical quantity. See under Radical, a
a radical vessel. See under Radical, a
In chemistry, a radical is an atom, molecule, or ion that has unpaired valence electrons or an open electron shell, and therefore may be seen as having one or more "dangling" covalent bonds. With some exceptions, these "dangling" bonds make free radicals highly chemically reactive towards other substances, or even towards themselves: their molecules will often spontaneously dimerize or polymerize if they come in contact with each other. Most radicals are reasonably stable only at very low concentrations in inert media or in vacuum. A notable example of free radical is the hydroxyl radical, a molecule that is one hydrogen atom short of a water molecule and thus has one bond "dangling" from the oxygen. Two other examples are the carbene molecule, which has two dangling bonds; and the superoxide anion, the oxygen molecule O2 with one extra electron, which has one dangling bond. On the other hand, the hydroxyl anion, the oxide anion and the carbenium cation are not radicals, since the bonds that may appear to be dangling are in fact resolved by the addition or removal of electrons. Free radicals may be created in a number of ways, including synthesis with very dilute or rarefied reagents, reactions at very low temperatures, or breakup of larger molecules. The latter can be affected by any process that puts enough energy into the parent molecule, such as ionizing radiation, heat, electrical discharges, electrolysis, and chemical reactions. Indeed, radicals are intermediate stages in many chemical reactions.
Chambers 20th Century Dictionary
rad′i-kal, adj. pertaining to the root or origin: original: fundamental: intrinsic: primitive: implanted by nature: not derived: serving to originate: (bot.) proceeding immediately from the root: (politics) ultra-liberal, democratic.—n. a root: a primitive word or letter: one who advocates radical reform, an uncompromising democratic politician: (chem.) the base of a compound.—v.t. Rad′icalise, to make radical.—v.i. to become radical, adopt radical political principles.—n. Rad′icalism, the principles or spirit of a radical or democrat.—adv. Rad′ically.—n. Rad′icalness. [Radix.]
British National Corpus
Spoken Corpus Frequency
Rank popularity for the word 'Radical' in Spoken Corpus Frequency: #2725
Rank popularity for the word 'Radical' in Adjectives Frequency: #369
The numerical value of Radical in Chaldean Numerology is: 6
The numerical value of Radical in Pythagorean Numerology is: 3
This is a civilizational struggle between the values of freedom and liberty, and radical Islamic terror. What happened in Paris could happen here, there is no middle ground. These aren't disgruntled or disempowered people. These are radical terrorists who want to kill us, because we let women drive, because we let girls go to school.
What used to be called liberal is now called radical, what used to be called radical is now called insane, what used to be called reactionary is now called moderate, and what used to be called insane is now called solid conservative thinking.
I think shes a very confused, very nervous woman, i dont think she wanted to do this. I think she really knew what was going to happen, and her worst nightmare has happened. I dont think shes gonna be there too long, either. I think that the radical left -- and shes sorta radical left too, by the way -- but I think the radical left is gonna take over.
We are still operating under the 2011 strategy and the problem with that is even if we drive ISIS out of Iraq, the [Obama] administration will just basically go back to sleep. They are not treating this for what it is – a global, Islamic insurgency, we have to go to the source … until radical Islam is defeated, it’s just going to be ‘whack a mole’ for a generation … until we stop that radical ideology that is fueling them, this is never going to end.
It's especially dangerous to say that we have to have radical change otherwise everything will die, we know we will not have radical change in the near future... So the logic would be that Europe would have to collapse.
Popularity rank by frequency of use
Translations for Radical
From our Multilingual Translation Dictionary
- radicalCatalan, Valencian
- radikál, radikálníCzech
- Wurzel, Radikale, radikal, radikalisch, Radikaler, krass, RadixGerman
- ριζοσπάστης, ρι, ριζοσπαστικόςGreek
- mullistava, perusteellinen, perus, radikaali, radikaalinen, juuri, vapaa radikaaliFinnish
- clé, super, radicale, radical, génial, racineFrench
- radicale, radicalicoItalian
- ラジカル, 累乗根, 部首, 徹底的, 根, 根本的Japanese
- 부수, 근본적인, 部首Korean
- radikalNorwegian Nynorsk
- rodnik, klucz, radykał, pierwiastekPolish
- radical, de rădăcină, rădăcinalRomanian
- радика́льный, радикал, фундамента́льный, основно́й, ключ, корнево́й, кореньRussian
- بنیاد پرستUrdu
- cấp tiến, căn nguyên, bộ thủ, 部首Vietnamese
Get even more translations for Radical »
Find a translation for the Radical definition in other languages:
Select another language:
- - Select -
- 简体中文 (Chinese - Simplified)
- 繁體中文 (Chinese - Traditional)
- Español (Spanish)
- Esperanto (Esperanto)
- 日本語 (Japanese)
- Português (Portuguese)
- Deutsch (German)
- العربية (Arabic)
- Français (French)
- Русский (Russian)
- ಕನ್ನಡ (Kannada)
- 한국어 (Korean)
- עברית (Hebrew)
- Gaeilge (Irish)
- Українська (Ukrainian)
- اردو (Urdu)
- Magyar (Hungarian)
- मानक हिन्दी (Hindi)
- Indonesia (Indonesian)
- Italiano (Italian)
- தமிழ் (Tamil)
- Türkçe (Turkish)
- తెలుగు (Telugu)
- ภาษาไทย (Thai)
- Tiếng Việt (Vietnamese)
- Čeština (Czech)
- Polski (Polish)
- Bahasa Indonesia (Indonesian)
- Românește (Romanian)
- Nederlands (Dutch)
- Ελληνικά (Greek)
- Latinum (Latin)
- Svenska (Swedish)
- Dansk (Danish)
- Suomi (Finnish)
- فارسی (Persian)
- ייִדיש (Yiddish)
- հայերեն (Armenian)
- Norsk (Norwegian)
- English (English)
Word of the Day
Would you like us to send you a FREE new word definition delivered to your inbox daily?
Use the citation below to add this definition to your bibliography:
"Radical." Definitions.net. STANDS4 LLC, 2023. Web. 29 Nov. 2023. <https://www.definitions.net/definition/Radical>.