radical
英 [ˈrædɪkl] 美 [ˈrædɪkəl,'rædɪkḷ]

adj.

根本的，基本的；激进的；彻底的；[植]根生的

n.

激进分子；根基，原子团；[数学]根数；

变形

复数：radicals

双语释义

adj.(形容词)

1. 根本的,基本的; 彻底的,完全的 having wide and important effects; thorough and complete
2. 激进的,激进派的 in favor of thorough and complete political change

英英释义

radical[ 'rædikəl ]

• n.
  • (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

    同义词：groupchemical 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"

    同义词：free radical

  • a person who has radical ideas or opinions
  • a character conveying the lexical meaning of a logogram
  • a sign placed in front of an expression to denote that a root is to be extracted

    同义词：radical sign

  • (linguistics) the form of a word after all affixes are removed

    同义词：rootroot wordbasestemtheme

• adj.
  • (used of opinions and actions) far beyond the norm

    "radical opinions on education"

    同义词：extremistultra

  • markedly new or introducing radical change

    "radical political views"

    同义词：revolutionary

  • arising from or going to the root

    "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

    "radical leaves"

    同义词：basal

词汇搭配

用作形容词 (adj.)～+名词

• radical measures激进的手段
• radical policies激进的政策

词组短语

free radical[化]自由基；游离基

radical polymerization游离基聚合；游离基引发聚合反应

radical mastectomy n. 根治性乳房切除术

radical operation根治手术

free radical polymerization自由游离基（引发）聚合

sulfate radical硫酸根

radical prostatectomy根治性前列腺切除术

acid radical n. 酸基，酸根

radical scavenger游离基清除剂

free radical reaction自由基反应

更多收起词组短语

同近义词辨析

vital, essential, basic, fundamental, radical

这组词都有“基本的，基础的”的意思，其区别是：

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。

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。

basic普通用词，指明确、具体的基础或起点。

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。

双语例句

用作形容词(adj.)

1. I know you are radical in your thinking, but don't go too far.
   我知道你思想激进,但不要走的太远。
2. He took up a radical position on this issue.
   他对这个问题抱着激进的态度。
3. They called for a radical reform of our tax system.
   他们要求对税收制度进行根本改革。
4. Lambert did not reach the more radical conclusion.
   兰伯特还没有达到更本质的结论。

用作名词(n.)

1. Ted is a fire-eating radical.
   泰德是个咄咄逼人的激进份子。

权威例句

Atom Transfer Radical Polymerization
Use of a free radical method to evaluate antioxidant activity
Hegemony and Socialist Strategy: Towards a Radical Democratic Politics
Antioxidant Determinations by the Use of a Stable Free Radical
Living free radical polymerization with reversible addition-fragmentation chain transfer (the life of RAFT)
Living Free-Radical Polymerization by Reversible Addition−Fragmentation Chain Transfer:  The RAFT Process
New Polymer Synthesis by Nitroxide Mediated Living Radical Polymerizations
Controlled/Living Radical Polymerisation. Atom Transfer Radical Polymerisation in the Presence of Transition-Metal Complexes
Controlled/“Living” Radical Polymerization. Atom Transfer Radical Polymerization Catalyzed by Copper(I) and Picolylamine Complexes
Re R, Pellegrini N, Proteggente A, Pannala A, Yang M & Rice-Evans C: Antioxidant activity applying an improved ABTS radical cation d...