radical

英['rædikl]美['rædikl]

adj.
1.根本的，彻底的，完全的
2.全新的，不同凡响的
3.激进的，极端的
4.【美】【俚】很好，非常好
n.
激进分子

时　态：rooted,rooting,roots

名　词：root'er

同反义词

同：	[n.] base, free radical, group, radical sign [a.] basal, extremist, revolutionary, ultra
反：	[a.] cauline

词义辨析

basic，essential，fundamental，radical，vital

这些形容词均有“基本的，基础的”之意。
basic普通用词，指明确、具体的基础或起点。
essential语气比basic和fundamental强，强调必不可少，暗含某物如缺少某部分，则失去本质特征的意味。
fundamental书面用词，不如basic使用广泛，侧重指作为基础、根本的抽象的事物。
radical着重指事物的根本或其来源。
vital正式用词，侧重指维持生命、活力必不可少的，或生死攸关的。

参考例句

A binary compound of boron with a more electropositive element or radical.
硼化物硼和带正电荷的元素或原子团形成的二元化合物。收藏
But for all its half-truth, it embodies a radical error which bids fair to stifle the genius of the modern world.
但是这个片面道理却包含着一个本性的错误，它抑制了天才智慧。收藏
As a continental country, a militant Chile had a capacity to undermine other nations and support radical insurgency that was far greater than Cuba's
作为一个大陆国家，一个好斗的智利，对其他国家进行破坏和支持激进派叛乱活动的能力要比古巴大得多。收藏
The H2O2 also is a precursor of the highly reactive hydroxyl radical, which participates in wood degradation.
H2O2也是具有高度反应活性的羟基游离基的前体,并参与降解过程。收藏
A univalent organic radical with composition C3H7,derived from propane.
丙基一种化学式为C3H7的单价的有机放射物，由丙烷生成收藏

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英英解释

名词解释：

(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
[同] group, radical, chemical group
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
- in the body free radicals are high-energy particles that ricochet wildly and damage cells
[同] free radical, radical

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形容词解释：

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
[同] basal, radical
[反] cauline

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