词根：techo, techn(o) = art/ skill 技艺 / 技术
词根techn来源于拉丁语/希腊语 techne 技术,-techo- / -techno- 为 -techn- 的变体；它相应的拉丁语词根为：-arti- 技术，来源于拉丁语 ars。
同源词：
1. technic [techn 技术，-ic 抽象名词后缀]
n.技能；技巧
2. technics [techn 工艺，-ics ...学]
n.工艺学
3. technical [techn 工艺，-ical (a.) 表示“…的”]
adj. 技术的,技术上的
4. technicality [见上，-ity 名词后缀]
n.技术性
5. technicalization [见上，-ization 名词后缀，...化]
n.技术化
6. technician [techn 技术，-ician 表示专业者]
n.技术员；质师；技术专家
7. technique [见上，-ique = -ic 名词后缀]
n.技术；技巧；技能
8. technology [techn 技艺，-logy (n.) 名词后缀，表示学科]
n. 工艺学,技术,工艺
9. technologist [见上，-logist ...学家]
n.工艺学家；技术专家
10. technolatry [techno 技术，latry 崇拜]
n.技术崇拜
11. electrotechnics [electro 电，见上]
n.电工学；电工技术
12. polytechnic
adj./n. 多种工艺的,综合工艺的; 综合性工艺学校
13. pyrotechnics [pyro 火，见上]
n.烟火制造（或释放）技术
14. tutor [ut(=us/each) 我们每个人,teacher 老师的变体]
n. 家庭教师,助教,监护人
15. tuition [-ion (n.) 名词后缀,找家教补课是要付补课费的]
n. 学费
词根：cis(cas, chis), cide = to cut（切）
cis和cid是一对同源异形根，来自拉丁动词caedere, 意为 to cut（切）。cid是不定式词干，cis是动名词词干。其变形为cas 和chis。同义词根有来自拉丁语的torn(tem) ,scind/scis,sect,sever,tail,tons,trench,cop/coup等。
同源词：
1. concise（好好地切的 con<com(=intensive) + cis(=cut)）
adj.简洁的；简明的
conciseness n.简洁
concisely adv.简洁地
Class,please write concise answers to the essay questions. 同学们，请简要写出这篇文章问题的答案。
2. excise（切掉 ex(=out) + cis(=cut)）
vt. 切除；删除
n.国内消费税，货物税
excision n.切除；删除
He insisted that the violent scenes be excised from the film. 他坚持应删除电影中的暴力场面。
3. incisive（砍向里面或内部的 in(=in,into) + cis(=cut) + -ive 形容词后缀）
adj.锐利的，尖锐的；激烈的；敏感的；果断的
incision n.切割，切开；切口
incisor n.门牙
incise v.切割；雕刻，铭刻 《in- = in》
She's an incisive editor and cuts right to the bone. 她是一个果断的编辑，修改删节大刀阔斧。
4. circumcision
n.（尤其指犹太等为男婴施行的）割礼；割包皮 *circum(=around)
circumcise v. 为...割包皮；为...行割礼
He was never circumcised,and i feel his uncircumcised penis is a turn off to women. 他没有做过包皮切除手术，我想女人们因此而离开他。
5. decisive
adj.决定性的，决定的；坚决的；确定的 *de(=down)
decisively adv.决定性地
decisive battle 决战
decisive evidence 确证
decisive ballots 决选投票
6. precis
n. <法>大意，概略，摘录 *pre(=before,intensive)
vt. <法>为…写摘要，概括…的大意
7. precise
adj.精确的；确切的；细致的，严格；刻板的 *pre(=before,intensive)
precise measurements 精确的测量
a very precise man 非常刻板的人
8. precisely
adv.精确地；一丝苟地；（用于肯定回答）对，确实如此
9. chisel
n.凿子，凿刀 v.用凿子凿、刻、雕 *chis<cis(=cut)
10. castration
n.阉割，删改 *cas<cis(=cut)
castrate v.阉割；删改
11. fratricide
n.杀害兄弟姐妹者《fratri = 拉丁文frater = trother》 cf.fraternity （手足之情）
12. insecticide
n.杀虫剂《insect = 昆虫》
13. matricide
n.杀母者《matr = 拉丁文 mater =mother》 cf.maternity （母性）
14. patricide
n.杀父者 《patri = 拉丁文 pater =father》 cf.paternity （父性）
15. suicide
v.,n. 自杀（者）（将自己切割）《拉丁文su- = self》
16. bactericide（bacteri = bacteria 细菌；-cide n. = killer 杀...剂）
n. 杀菌剂
bactericidal adj.杀菌的
词根：mens = to measure
来自拉丁语的mens 意为 to measure,同义词根来自拉丁语的meter,metr。
同源词：
1. commensurate（大小、尺寸相互一致的 com(=with) + mens (=measure)）
adj.成比例的；均衡的，相应的；同量的
commensurable adj.可用同一单位度量的
Salary for the position will be commensurate with prior experience and ability. 这个职位的薪水将与以往的工作经验和能力成比例。
2. immense（无法测量的 im<in(=not) + mens(=measure)）
adj.广大的，巨大的；无限的；极妙的，优秀的
immensity n.无限；广大；巨大
immensely adv.无限地；非常
There is an immense gulf of enmity between my trother and me. 我哥哥和多之间矛盾很深。
3. commensurable
adj.可度量的 *com(=with)
Their achievements are not commensurable.他们的成就不可相提并论。
4. dimension
n.（长、宽、厚、高等的）尺寸；(pl.)大小，规模；范围；重要性；<口>（女性的）胸围，腰围，臀围；[数]维 *di<dis(=away,apart)
What are the dimensions of the room ? 这个房间有多大？
building of great dimensions 庞大的建筑物
dimensions of the probem 问题的重要性
of one dimension 一维的，线性的
of two dimensions 二维的，平面的
of three dimensions 三维的，立体的
5. dimensional
adj. ...维的；尺寸的
3D(three-dimensional)figures (三维图形）
two-dimensional space 二维空间
three-dimensional films /picture 立体电影/三维图像
词根：glob = sphere
来自拉丁语的glob 意为sphere。
同源词：
1. global （球的、球体的 glot(=sphere)
adj.全求的，全世界的；总体的，全体的；球体的
Global communication becomes more efficient every year.全求通讯的效率每年都在提高。
2. globe
n.球；地球仪；用玻璃等做的球状物（如球形灯、鱼缸等）；（the~）地球
globefish 河豚
globe-trot 环球旅行
globe-trotter 环球旅行者
3. globule
n.小球；小滴；药丸 *ule(=small)
globular 球状的；由小球组成的
词根词缀：antro-, antr-
【来源及含义】Greek: cave, cavern; in medicine, of or pertaining to a [bodily] cavity or sinus; a term in anatomical nomenclature, especially to designate a cavity or chamber within a bone
【相关词根词缀】 A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract, tube": alveolo-; anu-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; meato-; ora-; parieto-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; uretero-; urethro-; vagino-; ventricul-.
【同源单词】antritis, antrum, atticoantrotomy
词根词缀：electro-, electr-, electri-
【来源及含义】Greek > Latin: electric, electricity; from amber, resembling amber, generated from amber which when rubbed vigorously [as by friction], produced the effect of static electricity
【相关描述】Equipment which we use everyday relies on electronics to function including calculators, car controls, cameras, washing machines, medical scanners, mobile telephones, radar systems, computers; as well as many other applications or devices which are listed in this unit.
【相关词根词缀】 A cross reference of word units that are related, directly and/or indirectly, with "electricity": galvano-; hodo-; ion-; piezo-; -tron; volt; biomechatronics, info; mechatronics, info.
【同源单词】acoustoelectric effect, acoustoelectronics, active electrode, ambulatory electrocardiographic monitoring, amphoteric electrolyte, anelectrotonus
词根词缀：spous-
【来源及含义】Latin: betrothed man, groom; betrothed woman, bride; both come from sponsus, past participle of spondere, "to promise, betroth" from Old French, espous [masculine, male]; espouse [feminine, female]
【相关词根词缀】This spous- unit is directly related to the spond-, spons- unit.
【同源单词】espousal, espouse, espoused, espouser, spousal, spousals