词根：-gen-, -gener-, -germ-

【词根含义】：生殖,出生

【词根来源】：来源于原始印欧语gen-(生育)在拉丁语中产生的词汇genus(种类),gens(人种),generare(生殖),generalis(全体的,总的,普遍的)和germen(发芽,分枝)等。

【同源单词】：benign, engine, engineer, engineering, gender

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：genus, genesis-, -gen, -gene, -genesis, -genetic, -genic, -geny, -genous

【来源及含义】Latin: birth, beget; descent, origin, creation, inception, beginning, race, sort; kind, class

【同源单词】aerospace engineering, agenesis, autogenous, benign, benignant, benignantly

词根词缀：-ous, -ious, -eous

【来源及含义】Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.

【相关描述】Only a small number of the hundreds of examples are presented because there are just too many to include at this time.

【同源单词】abdominous, abiogenous, ablepharous, abstemious, acanthaceous, acanthocephalous