re - Wiktionary, the free dictionary This word, when used in this particular sense, is often rendered as Re: (with a colon and a capital R) It is not an abbreviation Its capitalization in sentence-initial position (such as in subject lines) is often reanalyzed as being intrinsic, leading to intrasentence capitalization
Re Definition Meaning | Britannica Dictionary Britannica Dictionary definition of RE formal : on the subject of : regarding or concerning — used in business and legal writing and e-mail before a word or phrase that states the subject you will be discussing re your letter of last month Re: Changes in procedure
re - WordReference. com Dictionary of English re-, a prefix, occurring originally in loanwords from Latin, used with the meaning "again'' or "again and again'' to indicate repetition, or with the meaning "back'' or "backward'' to indicate withdrawal or backward motion: regenerate; retype; retrace; revert