前缀：pre-

1、前

prewar 战前的

preposition 前置词，介词

pre-liberation 解放前的

prefix 前缀

preschool 学龄前的

predawn 黎明前的

prehistory 史前期

preteen 十三岁以前的孩子

precondition 前提

prehuman 人类以前的

preconference 会议前的

predeparture 出发前的

2、预先

preexamination 预试

prepay 预付

prebuilt 预建的，预制的

prejudge 预先判断

premade 预先做的

preheat 预热（炉灶等）

prechoose 预先选择

precool 预先冷却

predetermine 预定，先定

preocook 预煮

前缀：pro-

1、向前，在前

progress 向前进，进步

prospect 向前看，展望

prolong 向前延长

protrude 向前伸出

project 向前投出，射出

promote 促进，提升

prologue 前言，序言

propel 推进

2、代理、代替

pronoun 代名词，代词

procurator 代理人

pro-consul 代理领事

prolocutor 代言人

3、拥护、新、赞成

pro-British 亲英的

pro-Bloshevik 拥护布尔什维克派

pro-American 亲美的

proslavery 赞成奴隶制度的

proabortionist 赞成堕胎者

前缀：proto- 原始

protogenic 原生的

protocontinent 原始大陆

protohistory 史前时期

protozoolgy 原生动物

prototype 原型

protohuman 早期原始人的

前缀：pseudo- 假(在元音前作pseud-)

pseudo-democratic 假民主的

pseudoclassic 伪古典的

pseudomyopia 假性近视

pseudoscience 伪科学

pseudopregnancy 假孕

pseudonym 假名，笔名

pseudocrystal 伪晶体

pseudology 谎话

pscudocompound 假化合物

pseudograph 伪书，冒名作品

后缀：-proof [形容词后缀]

表示防...的，不透...的

fireproof 防火的

waterproof 防水的

rainproof 防雨的

coldproof 抗寒的

smokeproof 防烟的

airproof 不透气的

lightproof 不透光的

soundproof 隔音的

bombproof 防炸弹的

gasproof 防毒气的

词根词缀：pac-, peac-, peas-

【来源及含义】Latin: peace, peaceful, calm, quiet; eased anger or agitation

【相关词根词缀】 Cross references directly, or indirectly, involving "calm, calmness, peace, quiet": plac-; quies-, quiet-; seren-.

【同源单词】Abi in pace, appeasableness, appeasably, appease, appeasement, appeaser

词根词缀：pachy-, pacho-, pach-

【来源及含义】Greek: thick, dense; large, massive

【相关描述】This element is used in the formation of botanical, zoological, and pathological or medical terms.

【同源单词】acropachy, acropachyderma, blepharopachynsis, isopach, isopachous, isopachy

词根词缀：pago-, pag- (cold, freezing)

【来源及含义】Greek: cold, frost, freezing; fixed or hardened; united

【相关描述】Be aware that there is another Greek pago- unit that refers to a "peak"; however, it is used by biologists and ecologists in the restricted sense of "foothill".

【相关词根词缀】 Cross references of word families that are related directly or indirectly to "winter, freezing, frost, and/or cold": algid- (cold, chilly); cheimo-, chimo- (winter, cold); crymo-, krymo- (cold, chill, frost); cryo-, kryo-; (cold, freezing); psychro- (cold); rhigo- (cold, frost; shiver).

【同源单词】pagon, pagophagia, pagophile, pagophilia, pagophilous, Pagophilus

词根词缀：pago-, pag- (peak)

【来源及含义】Greek: a "peak", but used by ecologists in the restricted sense of "foothill"

【相关描述】Be aware that there is another Greek pago- unit that refers to "ice".

【同源单词】pagophilous, pagophily, pagophyte

词根词缀：pago-, pag-, pagan-

【来源及含义】Latin: originally, country area, province; villager; more recent meanings: heathen, atheist; idolatrous, idol worshippers; heretic, heretical

【同源单词】neopagan, neopagan, neopaganism, neopaganist, neopaganize, pagan