词根：lud, lus = to play（游戏, 扮演）

  来自拉丁语的luder(=to paly)意为to laugh,to play。

同源词：

1. allude [对某事发笑al<ad(=to)+lud(=laugh, play)]
  vi. to  +sth 暗指；间接提到
  allusion n.暗指
  allusive adj. 暗指的
  Her drooping eyes allude to her profound fatigue. 她双眼低垂，说明她非常疲倦。

2. collusion [一起笑col<com(=together)+lus(=laugh, play)]
  n.同谋，勾结
  collude v. 同谋
  collusive adj.同谋的
  The airlines are sometimes thought to be guilty of collusion in ticket pricing. 有时航空公司会被指责相互串通垄断机票价格。

3. delude [由于可笑而使某人脱离正常状态de(=from)+lud(=laugh,play)]
  vt. 欺骗；哄骗；迷惑
  delusion n. 迷惑，欺瞒；错觉
  deIusive adj. 欺骗的；妄想的
  He deludes himself that he is handsome. 他自欺地认为自己长得很帅。

4. elude [笑着从危险状况中摆脱出来e<ex(=out)+lud(=laugh．piay)]
  vt.（巧妙地）逃脱，摆脱
  elusive adj.逃避的
  elusion n. 回避；选跑
  The criminal eluded the cops by stealing a car and driving away. 犯人躲开警察偷了一辆车逃跑了。

5. illusion [头脑对某事物闹着玩il<in(=on)+lus(=laugh,play)]
  n.幻想；错觉；假象
  illusionist n. 魔术师；空想家
  illusiva/illusory adj.幻影的；错觉的；迷惑人的
  Many old maids hold the illusion of perfect marriage well into their fifties. 许多老处女在五十岁以后仍然幻想着拥有完美的婚姻。

6. ludicrous
  adj.滑稽的，可笑的 *lud(=laugh)

7. prelude
  n.前奏曲；序幕 v.作为...的前奏（或序幕）*pre(=before),lud(=play)

8. interlude
  n.间奏；（话剧或歌剧等的）幕间；穿插事件 *inter(=between),lud(=play)
  interludes of bright weather 坏天气中间或有的晴天。

9. postiude
  n.后奏曲 *post(=after),lud(=play)

10. disllusion
  n.幻灭；觉醒 v.使幻灭；使醒悟（幻想破灭）《dis- = away》

词根词缀：glauc-, glauco-

【来源及含义】Greek > Latin: a silvery color, or bluish green; gleaming, bright; gray

【同源单词】absolute glaucoma, aglaucopsia, air-block glaucoma, antiglaucoma, glaucescent, glaucine

词根词缀：op-, opt-, optico-, opsi-, opso-, -opia, -ops, -opsia, -opsis, -opsy, -optic, -opic, -opy

【来源及含义】Greek: eye[s]; sight; see, vision

【相关词根词缀】 Related references to "eye" or "eye part" word families: blepharo-; core-; corneo-; eye, eyes; irido-; lenti-, lens-; lenticulo-; ocelli-; oculo-; ophthalmo-; phaco-; pupillo-; retino-; uveo-. Cross references of word families that are related directly, or indirectly, to: "appear, visible, visual, manifest, show, see, reveal, look": blep-; delo-; demonstra-; -orama; pare-; phanero-; phant-; pheno-; scopo-; spec-; vela-, veal-; video-, visuo-.

【同源单词】achromat, achromatopsia, acyanoblepsia, acyanopsia, aeluropsis, aglaucopsia

词根词缀：psylli-, psyll-

【来源及含义】Greek > Latin: flea

【同源单词】psyllid, Psyllidae, psyllids, psyllium, psylloid, Sarcopsyllidae