词根：plaud, plaus(plod, plos, plex) = strike（打, 击）, clap鼓掌

  来自拉丁语的plaudere,plodere(=to strike,to clap)——英文字根字典 ,意为to strike,to clap。plod,plos,plex是它们的变形。同义词根来自拉丁语的bat,flict,cuss,fend/fens(fenc,fest),lid/lis等和来自盎格鲁-撒克逊语的sla。

同源词：

1. plausible （可以使其感动的 plaus(=strike)）
  adj.看似真实的，似乎有道理的；花言巧语的
  plausibility n.似乎有理，可信性
  There are several plausible explanations for the current global climate changes.针对目前全球气候的变化有几种似乎合的解释。

2. applaud  [ap-=ad- = to near + plaud 鼓掌]
  v.鼓掌欢迎；向...喝彩；称赞，赞同 *ap<ad(=to,near)

3. applause  [见上，-e 后缀 ]
  n.鼓掌欢迎；喝彩；称赞，赞同 *ap<ad(=to,near)
  general applause 全场喝彩
  win the applause of the audience.赢得听众的喝彩

4. plaudit  [plaud 鼓掌 + -it 后缀]
  n.鼓掌喝彩；称赞
  gratified at the plaudits of the audience 对听众的喝彩感到高兴

5. explode  [ex- 出来 + plod 打 + -e 后缀 ]
  v.使爆炸；爆发；（感情）迸发；推翻（意见、理论等）；戳穿；激增 *ex(=out)
  explode a bomb 引爆炸弹
  explode a superstition 破除迷信
  exploded idea 被驳倒的意见

6. explosion  [见上,-ion名词后缀 ]
  n.爆炸；（愤怒、笑声等的）爆发；激增
  population explosion after World War II 第二次世界大战后人口的激增

7. explosive  [见上，-ive 后缀]
  adj.易爆炸的，爆炸性的；爆发的
  n.炸药，爆炸物 *ex (=out)
  explosive substance 爆炸物
  high explosive 高性能炸药，烈性炸药

8. implosion  [im- = in 里面，内 + plos = plaud 打 + -ion 名词后缀 ]
  n.（电灯泡等因为外力而发生的）内向爆炸

9. apoplexy  [apo = away 离开 + plex = plaud 打 + -e 后缀 → 一个人的正常精神离开了正常状态，乱打七  → ]
  n.中风，卒中 *apo(=away)
  apoplectic adj. 中风的，患中风的；有中风迹象的，濒于中风的
  cerebral apoplexy 脑卒中

词根词缀：ad-

【来源及含义】Latin: prefix; to, toward, a direction toward, addition to, near, at; and changes to: ac-, af-, ag-, al-, an-, ap-, aq-, ar-, as-, at- when ad- is combined with certain words that begin with the letters c, f, g, l, n, p, q, r, s, and t

【相关描述】The form ad- appears in this form before a vowel and before the consonants d, h, j, m, and v. It is simplified to a- before sc, sp and st.

Before c, f, g, l, n, p, q, r, s, and t; ad- is changed to ac-, af-, ag-, al-, an-, ap-, aq-, ar-, as-, and at-.

In other words, the d of ad usually changes into the same letter as the first letter of the following root or word when it is a consonant: ad-fix becomes affix, and ad-sign becomes assign; therefore, making a double consonant.

Another example includes: attract as with ad-tract (drawn towards); so it has a double t. On the other hand when ad- precedes a vowel, as with adapt, it is simply ad-apt, with one d. For the same reason, there is only one d in adore and adumbrate, because ad- has combined with orare and umbra each of which starts with a vowel.

So, remember: since these Latin words begin with vowels and not consonants, the d of ad does not double as shown in the previous examples.

【同源单词】a capite ad calcem, Ab ovo usque ad mala, Ab uno ad omnes, Abiit ad majores, abjure, accede

词根词缀：amoebo-, amoeb-, amoebi-, amebo-, ameb-, amebi-, -amoeba, -ameba

【来源及含义】Greek: change, alteration; return, exchange

【相关描述】Used in the sense "of or pertaining to a one-celled protozoan because it changes shape as it moves and feeds".

【同源单词】acanthamebiasis, acanthamoeba, amebic, amebic dysentery, amebic gangrene, amebic granulomatosis

词根词缀：en-, em-, el-

【来源及含义】Greek: in, into, inward; within; near, at; to put, to go into, or to cover with; as, entomb, encamp, enfold; to provide with; as, to enlighten; to cause to be; as, to enlarge; thoroughly; as, enmesh; in, within, into; as enzootic

【相关描述】This prefix, en-, changes to em- before b, p, or ph.

【同源单词】disembark, disembarkation, embark, embarkation, embarkment, embezzle

词根词缀：in-2

【来源及含义】Latin: in, into, within, inside, on, toward [il-, ir-, im-], in, into, etc.: include, incur, invade; also, used intensively, as in the words inflame and inflammable, or without perceptible force.

【相关描述】The in- changes or is assimilated to il- before l, as with "illuminate", to im- before b, as with "imbibe"; before m, as with "immediate"; before p, as with "implant"; and to ir- before r, as with "irrigate".

The form generally remains unassimilated in words formed in English; such as, inbreed.

Don't confuse this in-², meaning "in, into, within", etc. with the Latin prefix in-¹ meaning "not" nor with the prefix for English-origin words in-³ meaning "in, into; within".

【同源单词】illuminate, imbibe, immigrate, import, inaugurate, incalescent

词根词缀：limit-, lim-

【来源及含义】Latin: threshold (level at which something happens), point at which something begins or changes; boundary, limit

【同源单词】eliminate, elimination, illimitable, liminal, liminometer, liminoscope

词根词缀：vexill-

【来源及含义】Latin: flag, flags; standards, banners

【相关词根词缀】Flags constitute an explicit self-analysis by nation-states; so, vexillology may justify a claim to being an important aspect of the understanding of global societies and their flags. Flag symbols reflect political realities as well as changes that often are as profound as nation-states themselves.

【同源单词】cybervexillology, Vexilla regis prodeunt, vexillarious, vexillarius, vexillary, vexillation