汉：来源于希腊语，意为" on,beside ,after,outside,among,away",在元音字母和辅音字母h前，字母l脱落，变成ep。
英：word-forming element meaning "on, upon, above," also "in addition to; toward, among," from Greek epi "upon, at, close upon (in space or time), on the occasion of, in addition," from PIE *epi, *opi "near, at, against" (cf. Sanskrit api "also, besides;" Avestan aipi "also, to, toward;" Armenian ev "also, and;" Latin ob "toward, against, in the way of;" Oscan op, Greek opi- "behind;" Hittite appizzis "younger;" Lithuanian ap- "about, near;" Old Church Slavonic ob "on"). Before unaspirated vowels, reduced to ep-; before aspirated vowels, eph-. A productive prefix in Greek; also used in modern scientific compounds (e.g. epicenter). 1.epidemic
n.epidemic disease;spreading 流行病；(疾病、思想等)浒、普及
adj.spreading rapidly among many people in the same place for a fime;widespread 流行；蔓延的 *epi (=among),dem (=people)
例句：The Centers for Disease Control (CDC)warms the nation may face an influenza epidemic this winter.疾病控制中心提醒大家，今年冬天也许会有一场全国性的流感。
2.epidermis
n.outer layer of the skin 表皮，外皮，上皮 *epi (=on),derm (=skin)
例句：A skilled surgeon can slice epidermis without cutting deeper levets of skin.技术精湛的外科医生即使不切开深层的皮肤也能把表皮割掉。
3.epigram
n.brief or pointed saying;short poem expressing an idea in amusing way 警句；诙谐短诗 *epi (=beside),gram (=write)
例句：He wrote only two novels and a book of epigrams in his whole life.他一生中只写两本小说和一本格言警句。
4.epilepsy
n.nervous disease causing a person to fall unconscious often with involuntary movements癫痫；羊痫风 *epi(=on),lep (=take)
例句：Epilepsy is genetic,so it is possible your son will suffer the disease as well.癫痫是遗传性的，所以你的儿子也有患上这种病的可能。
5.epigraph
n.epitaph 碑铭，碑文 *epi (=on),graph (=write)
例句：An epigraph inscribed at the foot of the statues recounts Moulerson's heroic fight.雕像底下铭刻的碑文描述了摩罗森英勇的斗争过程。
6.epilogue
n.peroration <--->prologue;last part of a literary work后记，跋 *epi (=after),log(=speech)
例句：No epilogue for your play needs no excuse.你的剧本没有后记，这不需要辩解。
7.episode
n.one event in a chain of events (剧本、小说、故事的)片断，插曲；(电视、收音机中等连续剧中的)一集 *epi (=among),sod 例句：Teh Americans took away many lessons from the lranian hostage episode.美国人从伊朗人质事件中得到很多教训。
8.epistle
n.letter 书信，书函 *epi (=away),stle (=send)
例句：Our bible study group is studying the epistles.我们圣经学习小组正在学习使徒书信。
9.epitaph
n. an inscription on a gravestone 碑铭，碑文*epi (=on),taph(=tomb)
例句：Honoring his request,the family ordered a simple tombstone with no epitaph for his grave.遵照他的要求，家人为他的墓地预订了一块没有任何碑文的简单石碑。
10.epoch
n.a memorable event or date 新纪元 *ep 例句：The harvesting of electricity was an epoch event that touched off the industrial revolution.电力的发明是引发产业革命的划时代析事件。