词根：luc(lux, lus), lust, lustr = light, bright（明亮的）
词根lust来自拉丁语的lustrare,lustris 意为 enlighten,它的变体是lustr;词根luc来源于拉丁语的lucidus(=bright),它的变形为lux,lus。同义词根有来自拉丁语的lumin(lun) 和来自希腊语的photo 以及来自盎格鲁-撒克逊语的light。
同源词：
1. elucidate（拉出外边使清楚e<ex(=out) + luc(=light)）
vt.说明，阐明（问题）
elucidation n.说明，解释
elucidator n.解说者
The fules of rhetoric are elucidated in several works by Aristotle.亚里士多德的几部作品都对修辞规则作了阐述。
2. lucubration（在火光、灯光下努力后出现的结果luc(=light)）
n.（夜间挑灯）刻苦学习；苦心的著作
lucubrate v. 刻苦研究,用功学习；著书立说
All those hours of lucubration have furrowed your forehead.长期的刻苦在你的额头上留下了深深的皱纹。
3. pellucid
adj.透明的；清晰的，明白的 *pel<per(=through)
4. translucent
adj.半透明的 *trans(=through)
translucent body 半透明体
5. lucid
adj.清晰的，明白的；易懂的；头脑清楚的，神志清醒的；光辉的，明亮的 *id(=having the quality of )
lucidity n.明朗，清晰；神志清醒
lucidly adv.清晰地
lucid explanation 清晰的说明
lucid mind 清醒的头脑
6. Lucifer
n.金星；晨星；撒旦，魔鬼 *fer(=carry)
7. lucent
adj.发光的；透光的
8. lustre
n.光泽，光亮；光彩；光荣；玻璃吊灯架 *lus<luc(=light)
luster of pearls 珍珠的光泽
9. lustrous
n.有光泽的，光亮的 *lus<luc(=light)
lustrous pearls 明亮的珍珠
her lustrous eyes 她亮晶晶的眼睛
10. lusty
adj.强壮的，健壮的；精力充沛的；活泼的 *lus<luc(=light)
lusty girl from the country 乡下来的活泼女孩
lusty cheers 热烈的欢呼声
11. illustrate
v.（用实例、图解）说明；加插图于 *il<in(=into,in),lus<luc(=light)
well-illustrated textbook 插图丰富的教科书
12. illustration
n.图解；实例，例证；（用实例、图解等的）说明 *il<in(=into,in),lus<luc(=light)
illustrator n.插图画家；说明者
13. illustrative
adj.说明的，解释的；例证的 *il<in(=into,in),lus<luc(=light)
14. illustrious
adj.杰出的；著名的；（功绩等）辉煌的，卓越的 *il<in(=into,in),lus<luc(=light)
15. luxury
n.奢侈，奢华；奢侈品；享受，乐趣 *lux<luc(=light)
life of luxury 奢侈的生活
luxury hotel /ocean liner 豪华饭店/豪华远洋客轮
16. luxurious
adj.奢侈的，豪华的；贪图享受的；放纵的 *lux<luc(=light)
luxurious surroundings 奢侈的环境
luxurious hotel 豪华饭店
luxurious habits 贪图享受的习惯于
17. luxuriant
adj.繁茂的，浓密的；丰富的；（文体、艺术样式）华丽的 *lux<luc(=light)
luxuriance n. 茂盛；丰富；华丽
luxuriant vegetation of the tropics 热带茂密的植被
luxuriant imagination 丰富的想像力
18. luxuriate
v.繁茂地生长；心情享乐，过奢侈的生活 *lux<luc(=light)
luxuriate in the warm spring sunshine 享受春天温暖的阳光
19. deluxe
adj.高级的；豪华的；奢华的 *de(=intensive),lux<luc(=light)
deluxe edition (of a book) （书的）精装版
deluxe hotel 高级饭店
articles deluxe 奢侈品
20. noctilucent
adj.夜间发光的《nocti = light》
词根：sat(set) = enough 满
来源于拉丁语 satur/satis/satiare 意为 enough,元音弱化后变成set。
同源词：
1. asset （在近处充分拥有 as<ad(=to,near) + set<sat(=enough)）
n.（pl.）资产，财产；宝贵的人（或物）
Harold has been a real asset to his company. 哈罗德一直是他们公司的骨干。
2. insatiable（不充分的in(=not) + sat(=enough)）
adj.不知足的；贪得无厌的
The addictive personality invariably has insatiable appetites. 上瘾的人都有贪得无厌的欲望。
3. satiate（使充分 sat (=enough)）
vt. 使饱足；（因为太多而）使厌腻
satiable adj.可满足的
Just a salad and crackers tend to satiate me. I'm a light eater. 我要一份沙拉和饼干就够了，我的胃口不大。
4. insatiate
adj.不知足的 *in(=not)
5. satisfaction
n.满足；乐事；赔偿 *fact(=make)
6. satisfactory
adj. 令人满意的 *fact(=make)
satisfactorily adv.令人满意地
7. satisfy
v.使满意，使满足；使确信
satisfying adj.令人满意的
8. saturate
v.浸透；（被湿气或潮湿的东西）浸湿；使饱享；充满；饱和
saturated with sunshine 心情享受阳光的
saturated with learning 专心于学问的
saturated solution of salt 饱和盐溶液
9. saturation
n.浸透；饱和（状态）
saturation bombing [军]饱和轰炸
saturation point 饱和点
词根：cur = to take care
来自拉丁语的cur意为to take care。
同源词：
1. procure（事先注意、小心pro(=before) + cur(=take care)）
vt.取得，获得；筹措；引起，导致；介绍（娼妓）
procurement n.获得；筹措
procurer n.拉皮条者
procuress n. 老鸨
procurator n.代诉人
procurable adj.可获得的
My fiancé procured a string quarter to play when he proposed.我未婚夫在向我未婚时，弄来了一个弦乐四奏乐团。
2. accurate
adj.准确的；精密的，精确的 *ac<ad(=to ,intensive)
accurately adv.精确地
accurate machines/statements精密的机器/精确的陈述
accurate typist 错误极少的打字员
3. accuracy
n.准确；精密 *ac<ad(=to,intensive)
with accuracy 准确地
4. secure
adj. 安全的；安心的;确定无疑的，确信的；稳固的；稳当的
v.使安全，确保；得到（不易获得的东西）；缚牢；关紧 *se(=away)
securely adv.安全地；有把握地
secure investments/position稳当的投资/稳固的地位
The success secured his reputation.成功确保了他的名声
Please secure a seat for me.请给我占一个位子。
5. security
n.安全（感）；保证；保安，防卫；担保（物）；(pl.)债券，证券 *se(=away)
the Security council（联合国）安全理事会
security police/forces 秘密警察/保安部队
Security is the greatest enemy.安全是最大的敌人。不能掉以轻心。
security for a loan贷款的担保
government securities 政府债券
Securities and Exchange Commission 证券交易委员会（缩写：SEC）
6. cure
n.治疗；治愈；（处理社会问题等的）对策 v.治疗；纠正；消除（弊病等）；加工处理（通常指的是为了保存肉，鱼等而腌制、熏制、风干等
curé <法>堂区牧师
cure-all 万能药
cure of unemployment 失业的对策
well-cured bacon 加工得好的熏肉
7. curable
adj.可医治的；可以纠正的
curability n.治愈可能性
8. curative
adj.有疗效的；治疗的
curative value of sunshine and sea air 日光和海边空气的治疗价值
9. curator
n.（博物馆、美术馆的）馆长；管理者
10. curio
n.古懂，真品
curio dealer 古董商
11. curiosity
n.好奇心；珍品；古玩
curiosity shop 古玩店
12. curious
adj.有好奇心的；爱打听人的事的；奇妙的
curiously adv.好奇地；奇妙地
词根：fulg = to shine
来自拉丁语的fulg意为to shine。同义词根有来自拉丁语的splend。
同源词：
1. refulgent（非常闪耀的re(=intensive) +fulg(=shine)）
adj.辉煌的；灿烂的
refulgence n.光辉，灿烂
I had an amazing dream of a holy figure garbed in refulgent robes of light.我做了一个惊人的梦，梦见一个圣人穿着一件光芒灿烂的衣服。
2. effulgent
adj.辉煌的，灿烂的 *ef<ex(=out)
effulgence n.光辉，灿烂
词根：splend = to shine（发光；照耀）
来自拉丁语的splend 意为to shine。同义词根为来自拉丁语的fulg。
（*拉丁文splendēre (=to shine)——英文字根字典）
同源词：
1. resplendent（非常闪耀的re (=intensive) +splend (=shine)）
adj.辉煌的；灿烂的
resplendence/resplendency 光辉；灿烂
We stopped to admire a resplendent Christmas tree in the square.我们停下脚步欣赏立在广场上的光彩夺目的圣诞树。
2. splendid
adj. 耀眼的；壮丽的；出色的；极好的
splendid sunset/house/victory 壮观的落日/雄伟的房子/辉煌的胜利
splendid dinner /idea 极好的晚餐/想法
3. splendiferous
adj.了不起的；辉煌的 *fer(=produce)
4. splendour
n.壮观；辉煌，光彩；（名声、业绩等的）杰出
splendour of the palace 宫殿的壮观
splendour stained glass window 彩色玻璃窗的光彩
词根词缀：cand-, can-, cend-
【来源及含义】Latin: to glow, to glow with heat; to burn; to glitter, to shine; white
【相关词根词缀】 Cross references of word groups that are related, directly, indirectly, or partly to: "fire, burn, glow, or ashes": ars-, ard-; -bust; caust-, caut-; crema-; ciner-; ether-; flagr-; flam-; focus, foci-; fulg-; gehenna-; ign-; phleg-; phlog-; pyreto-, -pyrexia; pyr-; spod- (ashes; waste); volcan-.
【同源单词】candelabrum, candent, candescent, candid, candidacy, candidate
词根词缀：ethero-, ether-, aethero-, aether-, aither-
【来源及含义】Greek > Latin: burn, shine, to kindle; light up; the heavens; the upper air, the sky
【相关词根词缀】 Etymologically related "light, shine, glow" word families: fulg-; luco-; lumen-, lum-; luna, luni-; lustr-; phengo-; pheno-; phospho-; photo-; scinti-, scintill-; splendo-. Cross references of word groups that are related, directly, indirectly, or partly to: "fire, burn, glow, or ashes": ars-, ard-; -bust; cand-, cend-; caust-, caut-; crema-; ciner-; flagr-; flam-; focus, foci-; fulg-; gehenna-; ign-; phleg-; phlog-; pyreto-, -pyrexia; pyr-; spod- (ashes; waste); volcan-.
【同源单词】ether, ether lavage, etherated, ethereal, ethereality, etherealization
词根词缀：fulg-; fulmi-
【来源及含义】Latin: to shine, to flash, to glow, to burn; fulmi-, lightning, thunder forth, denounce; related to fulg-
【相关词根词缀】 Etymologically related "light, shine, glow" word families: ethero-; luco-; lumen-, lum-; luna, luni-; lustr-; phengo-; pheno-; phospho-; photo-; scinti-, scintill-; splendo-. Cross references of word groups that are related, directly, indirectly, or partly to: "fire, burn, glow, or ashes": ars-, ard-; -bust; cand-, cend-; caust-, caut-; crema-; ciner-; ether-; flagr-; flam-; focus, foci-; gehenna-; ign-; phleg-; phlog-; pyreto-, -pyrexia; pyr-; spod- (ashes; waste); volcan-.
【同源单词】circumfulgent, effulge, effulgence, effulgent, fulgency, fulgent
词根词缀：luco-, luc-, luci-, lux, -lucence, -lucent
【来源及含义】Latin: light, lights, shine, shines, shining
【相关词根词缀】 Etymologically related "light, shine, glow" word families: ethero-; fulg-; lumen-, lum-; luna, luni-; lustr-; phengo-; pheno-; phospho-; photo-; scinti-, scintill-; splendo-.
【同源单词】Alenda lux ubi orta libertas, Anno lucis, antelucan, antelucidate, circumlucid, elucid
词根词缀：lumen-, lumin-, lum-
【来源及含义】Latin: light, shine; torch, lamp; heavenly body
【相关词根词缀】 Etymologically related "light, shine, glow" word families: ethero-; fulg-; luco-; luna, luni-; lustr-; phengo-; pheno-; phospho-; photo-; scinti-, scintill-; splendo-.
【同源单词】autoluminescence, bioluminescence, bioluminescent, cathodoluminescence, cathodoluminescence, chemiluminescence labeling