词根：-lumin-, -luc-, -lustr-

【词根含义】：光,照

【词根来源】：-lumin-来源于拉丁语动词lumino, luminare, luminavi, luminatus(光,照)或拉丁语名词lumen, luminis, n(日光); -luc-来源于拉丁语动词luceo, lucere, luxi, -(发光)或拉丁语名词lux, lucis, f(光); -lustr-来源于拉丁语动词lustro, lustrare, lustravi, lustratus(照明); 可追溯到原始印欧语leuk, louk, luk。

【同源单词】：illuminance, illuminate, illuminati, illumination, illumine

前缀：il-, in-, ir-, im-

【词根含义】：不,无,非;入,向内

【词根来源】：(il-用于l前;im-用于b, m, p前;ir-用于r前;in-用于其它情况)   来源于拉丁语in。

【同源单词】：illegal, illegality, illegitimate, illiterate, illogical

词根词缀：-ation, -ization, -isation

【来源及含义】Greek > Latin: a suffix; action, act, process, state, or condition; or result of doing something

【相关描述】Although there are over 1,450 word entries ending with -ation or -ization listed in this unit, there are certainly many more which exist in the English language. At any rate, this unit provides a significant number of -ation and -ization examples for you to see.

【同源单词】abarticulation, abbreviation, abdication, abdominal examination, aberration, abevacuation

词根词缀：lustr-, lust-

【来源及含义】Latin: light up, shine

【相关词根词缀】 Etymologically related "light, shine, glow" word families: ethero-; fulg-; luco-; lumen-, lum-; luna, luni-; phengo-; pheno-; phospho-; photo-; scinti-, scintill-; splendo-.

【同源单词】illustrate, illustration, illustrative, illustratively, illustrator, illustrious