8-4-2 CIRCU(M),CYCL(O)

encircle [in'sә:k(ә)l] vt.环绕,围绕,包围,绕...一周

【Word Origin】c.1400, from en- (1) "make, put in" + circle (n.).  Related: Encircled; encircling. ⭐️⭐️⭐️⭐️⭐️

semicircle ['semisә:k(ә)l] n.半圆形

【Word Origin】1520s, from semi- "half,"+ circle (n.) or else from Latin semicirculus. ⭐️⭐️⭐️⭐️⭐️

cycle ['saik(ә)l] n.周期,循环,自行车,一段时间,整套,(电学)周波 vi.循环,轮转,骑自行车 vt.使循环,使轮转

【Word Origin】late 14c., from Late Latin cyclus, from Greek kyklos "circle, wheel, any circular body, circular motion, cycle of events," from PIE kw(e)-kwl-o-, suffixed, reduplicated form of root *kwel- (1), also *kwele-, "to roll, to move around, wheel" (cognates: Sanskrit cakram "circle, wheel," carati"he moves, wanders;" Avestan caraiti "applies himself," c'axra "chariot, wagon;" Greek polos "a round axis" (PIE *kw- becomes Greek p- before some vowels), polein "move around;" Latin colere "to frequent, dwell in, to cultivate, move around," cultus "tended, cultivated," hence also "polished," colonus "husbandman, tenant farmer, settler, colonist;" Lithuanian kelias "a road, a way;" Old Norse hvel, Old English hweol "wheel;" Old Church Slavonic kolo, Old Russian kolo, Polish koło, Russian koleso "a wheel”). ⭐️⭐️

【Vocabulary Builder】cycle "circle" wander ['wɔndә(r)] vi.漫步,徘徊,迷路,迷失方向,离题 chariot ['tʃæriәt] n.(双轮)战车 wagon ['wægәn] n.四轮马车,货车 v.用运货马车运输货物 axis ['æksis] n.轴 cultivate ['kʌltiveit] vt.培养,耕作 polished ['pɔliʃt] adj.擦亮的,磨光的,精练的,优美的,无暇的 husbandman ['hʌzbәndmәn] n.农夫 tenant ['tenәnt] n.房客,租客 v.出租cyclist [‘saiklist] n.骑脚踏车(自行车)的人

【Word Origin】"bicyclist," 1882; see bicycle + -ist. Saxonists preferred wheelman. ⭐️⭐️⭐️⭐️⭐️unicycle ['ju:nisaikl] n.单轮脚踏车(=monocycle)

【Word Origin】1869, American English, from Latin uni- "one" (see uni-) + -cycle, from bicycle (from Greek kyklos "circle, wheel”). ⭐️⭐️⭐️⭐️⭐️

bicycle ['baisik(ә)l] n.脚踏车,自行车

【Word Origin】1868, coined from bi- "two" + Greek kyklos "circle, wheel" (see cycle (n.)), on the pattern of tricycle; both the word and the vehicle superseding earlier velocipede. The English word probably is not from French, though often said to be (many French sources say the French word is from English). The assumption apparently is because Pierre Lallement, employee of a French carriage works, improved Macmillan's 1839 pedal velocipede in 1865 and took the invention to America. See also pennyfarthing. As a verb, from 1869. ⭐️⭐️⭐️

【Vocabulary Builder】bi- "two"+cycle "circle,wheel" vehicle ['vi:ik(ә)l; (-) 'vi:hikl] n.交通工具,车辆,媒介物,传达手段 supersede [su:pә'si:d] vt.代替,取代,接替,紧接着...而到来,[律]延期 vi.推迟行动 velocipede [vi'lɔsipi:d] n.早期的脚踏两轮车,孩童用三轮车 carriage ['kæridʒ] n.马车,客车,运费,姿态,(机械)车架 pedal ['ped(ә)l] n.踏板 v.踩...的踏板 pennyfarthing n.(19 世纪晚期使用的)前轮大后轮小的自行车

tricycle ['traisik(ә)l] n.三轮车,机器三轮车

【Word Origin】1828, "three-wheeled horse-drawn carriage," from French tricycle (1827); see tri- "three"+ cycle (n.). The pedal-powered version is first attested 1868. ⭐️⭐️⭐️⭐️⭐️

【Vocabulary Builder】tri- "three"+cycle "circle" carriage ['kæridʒ] n.马车,客车,运费,姿态,(机械)车架

cyclone ['saiklәun] n.旋风,飓风,暴风 [气]气旋

【Word Origin】1848, coined by British East India Company official Henry Piddington to describe the devastating storm of December 1789 in Coringa, India; irregularly formed from Greek kyklon "moving in a circle, whirling around," present participle of kykloun "move in a circle, whirl," from kyklos"circle" (see cycle (n.)). Applied to tornados from 1856. ⭐️⭐️⭐️

【Vocabulary Builder】cyclo(ne) "circle" devastating ['devәsteitiŋ] adj.破坏性的,全然的 whirl [wә:l; (-) hwә:rl] v.(使)旋转,急动,急走 n.旋转 tornado [tɔ:'neidәu] n.旋风,龙卷风,大雷雨,具有巨大破坏性的人(或事物) [军] ("狂风") 英国、德国、意大利三国合作研制的双座双发超音速变后掠翼战斗机

Revision: 

circus encircle semicircle cycle cyclist unicycle bicycle tricycle cyclone 

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