縮寫19:p.a.
拉丁文:per annum
釋義:through a year 每年

縮寫20:per cent(通常寫作percent)
拉丁文:per centum
釋義:for each one hundred 百分之一

縮寫21:PH.D.
拉丁文:Philosphiae Doctor
釋義:Teacher of Philosophy 哲學(xué)博士

縮寫22:P.M.
拉丁文:Post Meridiem
釋義:after midday 下午,午后
例句:We will meet the mayor at 2 P.M.

縮寫23:p.p.
拉丁文:per procurationem
釋義:through the agency of 經(jīng)由代理人

縮寫24:PRN
拉丁文:pro re nata
釋義:as needed 當(dāng)需要時(shí)
用法:處方用語(yǔ)

縮寫25:pro tem
拉丁文:pro tempore
釋義:for the time being, temporarily 暫時(shí)

縮寫26:P.S.
拉丁文:post scriptum
釋義:after what has been written 附言
例句:(信結(jié)尾處)
Sincerely,
John Smith.
P.S. Tell mother I say hello!

縮寫27:Q.D.
拉丁文:quaque die
釋義:every day 每天
例句:處方用語(yǔ)

縮寫28:Q.E.D.
拉丁文:quod erat demonstrandum
釋義:which was to be demonstrated 證明完畢
例句:At the end of the long proof, the professor exclaimed "Alas, Q.E.D!"

縮寫29:q.v.
拉丁文:quod videre
釋義:which to see 參見
用法:當(dāng)某個(gè)術(shù)語(yǔ)或短語(yǔ)可在當(dāng)前的文檔或書籍里查找時(shí),將q.v.加在其后。復(fù)數(shù)形式為"qq.v."。

縮寫30:Re
拉丁文:in re
釋義:in the matter of, concerning 關(guān)于
用法:通常作為傳統(tǒng)書信及備忘錄標(biāo)題的前綴。但在電子郵件中使用時(shí),它更像是"reply"(回復(fù))的縮寫。

縮寫31:REG
拉丁文:regina
釋義:queen 女王
用法:女王在位期間,英國(guó)硬幣上印有REG。當(dāng)執(zhí)政君主是king時(shí),用Rex。

縮寫32:R.I.P.
拉丁文:requiescat in pace
釋義:may he/she rest in peace 愿他(或她)安息吧
例句:R.I.P good grandmother.

縮寫33:s.o.s.
拉丁文:si opus sit
釋義:if there is need, if occasion require, if necessary 如有必要

縮寫34:stat.
拉丁文:statim
釋義:immediately 馬上,立即
例句:That patient needs attention, stat.!

縮寫35:viz.
拉丁文:videlicet
釋義:namely, precisely, that is to say 即,就是
例句:The noble gases, viz. helium, neon, argon, xenon, krypton and radon, show a non-expected behaviour when exposed to this new element.

縮寫36:vs
拉丁文:versus
釋義:against 以……為對(duì)手
例句:The next football game will be the Knights vs. the Sea Eagles.