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1. Arising from or going to a root or source; basic: proposed a radical solution to the problem.
2. Departing markedly from the usual or customary; extreme or drastic: a radical change in diet.
3. Relating to or advocating fundamental or revolutionary changes in current practices, conditions, or institutions: radical politics; a radical political theorist.
4. Medicine Relating to or being surgery that is extreme or drastic in an effort to eradicate all existing or potential disease: radical hysterectomy.
5. Linguistics Of or being a root: a radical form.
6. Botany
a. Of, relating to, or arising from a root: radical hairs.
b. Arising from the base of a stem or from a below-ground stem or rhizome: radical leaves.
7. Slang Excellent; wonderful.
1. One who advocates fundamental or revolutionary changes in current practices, conditions, or institutions: radicals seeking to overthrow the social order.
2. Mathematics The root of a quantity as indicated by the radical sign.
3. Symbol R An atom or a group of atoms with one unpaired electron.
4. Linguistics See root1.
a. Any of the basic Chinese characters that are combined to form more complex characters.
b. Any of the traditional set of basic strokes or groups of strokes that make up Chinese characters and are used to classify and organize them in dictionaries.

[Middle English, of a root, from Late Latin rādīcālis, having roots, from Latin rādīx, rādīc-, root; see wrād- in Indo-European roots.]

rad′i·cal·ly adv.
rad′i·cal·ness n.
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References in periodicals archive ?
Aside from gaps or weaknesses in parenting, another usual culprit is technology that is moving with such speed, volume and radicalness. It might be very well so, just as parents can hardly escape some level of culpability.
Knowledge Acquisition Asymmetries and Innovation Radicalness. Journal of Small Business Management, 50(3), 447-468.
They proposed that team characteristics would moderate participants' perceptions of process complexity, process rigidity, and process radicalness associated with managing a set of logistics processes using ERPsim.
Intervention Characteristics Relative Stakeholders' perception of the Advantage (*) advantage of implementing the intervention versus an alternative solution Complexity* Perceived difficulty of implementation, reflected by duration, scope, radicalness, disruptiveness, centrality, and intricacy and number of steps required to implement Compatibility* The degree of tangible fit between meaning and values attached to the intervention by involved individuals, how those align with individuals' own norms, values, and perceived risks and needs, and how the intervention fits with existing workflows and systems.
You wrote a piece titled "The Democratic Radicalness of Libraries" (biblioparadiso.tumblr.com/post/175784893331/thedemocratic-radicalness-of-li braries).
Post-Umbrella Movement: Localism and radicalness of the Hong Kong student movement.
A Multi-peer assessment platform for programming language learning: Considering group non-consensus and personal radicalness. Interactive Learning Environments, 24(8), 2011 -2031.
As the exhibition curator explains it, back in 2011 Baalbaki wanted to explore the idea of radicalness that followed the 2008 financial crisis and its consequences.
In the first round, the order for drivers in the vehicle group situation to take action was determined according to the identified front or rear position of vehicle and the radicalness of the driver's propensity.
It is worth noting, however, the range of readings gay, queer, and feminist critics have offered: some claim that Whitman reaches the peak of his sexual-political radicalness with the third edition and subsequently becomes more conservative (the common narrative).
This structure, new at the time of publication, incorporates the often contradictory aspects of gender, ethnicity, class, sexuality and feminist politics while refusing to accept any one single position and the radicalness of the text lies precisely in that refusal, which leads them to create radical personal and collective identities (Torres 1998, 279).