Take the 2-minute tour ×
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It's 100% free, no registration required.

What are the rules for putting a full stop after an abbreviation.

For instance, I want to say the following on my business card.

Tel: xxx-xxx-xxx

Do I need to put a full stop after the Tel?

Tel.: xxx-xxx-xxx

share|improve this question
    
Do whatever you want. –  curiousdannii Nov 19 at 5:26

4 Answers 4

up vote 3 down vote accepted

On a business card, Tel: should be abundantly clear without the need for a [BrE. full stop | AmE. period]. The overriding concern is clarity. If an abbreviation could be mistaken for a word, include it; otherwise, you can probably remove it.

The trend has been to simplify. As a matter of rule, measurement units are bare (except inches which is always in. so as not to be confused with the word in). So too are Canadian and U.S. postal abbreviations. Most style books and corporate identity guides prefer the bare form for acronyms as well: it is NATO or Nato and no longer N.A.T.O., IBM no longer I.B.M. And in Britain, Saint is commonly St now, although universally St. in the U.S.

share|improve this answer

On the principle of the less punctuation the better, no. Alternatively, you could put 'Telephone' in full, or insert an appropriate image.

share|improve this answer

The full-stop is necessary to make it clear that it is an abbreviation for 'telephone'.

In your example, as you already have a colon, the full-stop may be dispensed with, without ambiguity. In all other cases, it is necessary.

share|improve this answer

The rules differ between AmE and BrE.

In BrE a full stop is needed unless the last letter of the contraction is the same as the last letter of the original word, e.g. Rd (Road), Mr (Mister) and St (Saint or Street) do not need one, but Prof. (Professor), Rev. (Reverend) and Dept. (Department) do.

In AmE the rule is to always use a full stop/period, regardless of the last letter.

However, there is a growing trend to omit punctuation - except in sentences, of course! You may notice the absence of commas after each line in (street) addresses, for instance. This is called "open punctuation" and has existed for at least 25 years. Using the punctuation in abbreviations and so forth is known as "full punctuation".

Personally (a Brit), I would omit the full stop and the colon as well.

share|improve this answer
    
Most of us would not use a full stop after Prof, Rev or Dept today, @Colin T. "We usually write abbreviations without full stops in modern British English" (Michael Swan, Practical English Usage,2 005.2) –  tunny Nov 19 at 9:49

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.