What is the difference between dialogue and dialog?

Question

I am American, and I always thought the difference between dialogue and dialog was one of meaning, the way Merriam-Webster has them listed:

2 entries found:

• dialogue (noun)
• dialog box (noun)

According to Merriam-Webster, dialogue means conversation, and dialog box means a window on a computer screen.

This is how I use/spell them.

However, at least some people see them as differences between British English and American English.

So my questions, I guess, are:

• First of all, is my understanding, and Merriam-Webster's definition, correct?
• Is dialog used with any frequency by Americans to mean conversation?
• Is dialog not used in British English for the window on a computer screen?
• Is there any other difference I'm not aware of, or perhaps a better explanation for the two versions?

Answer 1

The only real justification for seeing dialog as "American" is that (largely thanks to Noah Webster) there are many words where US spelling seems more "logical" than British.

There aren't many written instances of dialog prior its rapid uptake by software-oriented writers, but here's one from 1910 in Transactions and proceedings of the American Philological Association, where one might reasonably suppose the author to be perfectly literate.

I think it's just that on average people involved in technical writing are more inclined to ignore precedent and go for what seems to them the logical spelling. Consequently we see the short form much more often in computer contexts such as dialog box, leading many people to suppose there are in fact two different words involved (or at least, that the word has two different spellings dependent on context).

It seems to me usage is currently in a "transition phase", but most likely the shorter form will continue to encroach further into traditional, non-computer contexts, and will eventually be seen as standard for all contexts (but for most people, particularly Brits, this hasn't happened yet).

Answer 2

I was surprised to discover that Americans do indeed use the dialogue spelling when talking about a conversation.

Using the American English corpus:

Ngram

I search for "dialog with" here, because that's a word sequence that would only be used in the sense of "conversation with", and won't match "dialog box".

The graph for the British English corpus is very similar in appearance.

Historical data isn't very useful for a new concept like a dialogue box.

What we see for 2000 is:

• Dialog box
  • American: ~0.00240%
  • British : ~0.00045%
• Dialogue box
  • American: negligible
  • British: ~0.000050%

British people do use dialog, but usually it's when they're making concessions to American readers.

For what it's worth, my British spellchecker doesn't recognise dialog at all.

Answer 3

OxfordDictionaries.com has a page on British and American spelling, where it has this note:

The distinctions here are not hard and fast. The spelling analogue is acceptable but not very common in American English; catalog has become the US norm, but catalogue is not uncommon; dialogue is still preferred over dialog.

Searching for dialog vs. dialogue in COCA bears this out; dialogue appears in print almost 18 times more frequently in US texts than dialog.

The Unabridged version of Merriam-Webster simply lists dialog and dialogue as being variants of each other.

I have seen both dialog box and dialogue box used in user interface specifications. I suspect that dialog is favored in both specifications and (especially) code simply because it's a couple of characters shorter.

(As you might suspect, UK texts do use dialogue box when referring to dialog boxes. Also note that ZDNet UK has a tech podcast that's called Dialogue Box.)

Answer 4

To your title question, there is no semantic difference between 'dialog' and 'dialogue'; they both mean a conversation. Specifically with 'dialog box' vs 'dialogue box', the latter is very rare.

To your specific questions:

• yes, MW's definition is correct.
• yes, Americans use 'dialog' to mean 'conversation' ('dialogue' seems to be more formal)
• 'dialog box' seems to be by far the most common spelling in British English (see a questionable Ngram )
• an explanation of the pair is a bit more involved. The '-logue' ending, coming from the Greek root for 'speech' is the source for a handful of English words: analog, catalog, dialog, epilog, monologue, prolog, travelog (plus a number of much less frequent terms). I have given these their most common current spelling in AmE; all used to be spelled with '-logue'. Just like other creations from Latin and Greek, difficult or unspoken spellings in English have been simplified over the years (e.g. 'anaesthesia' -> 'anesthesia'). Depending on which side of the Atlantic you're on, the simplification is sometimes used and sometimes not. In AmE, '-logue' seem to be in the middle of that process for some (dialog, catalog) and not at all for others ('monologue'). And for some modern coinages, even in BrE where '-logue' is more common, it is spelled much more commonly 'dialog box'.

Answer 5

As one of the people who named the Dialogue Box video podcast - and a programmer and writer for thirty years - I'd like to confirm the thinking that went into it. As far as we were concerned, 'Dialog', like 'Program', was AmE usage for 'Dialogue', like 'Programme', in BrE. The main UK usage for the AmE spellings was in IT, which had for a long time been dominated by US software - Windows, C, Unix, Pascal et al. As the US spellings were commonplace in the literature, and encoded in the grammar and syntax of programming languages and operating systems, they were used in this context to the practical exclusion of BrE alternatives and had been since some point in the 70s. So, Dialog Box would be the 'correct' use as there was no example of the phrase outside IT.

However, there were two of us in the videos and we were British - and there was going to be an element of interaction with viewers (readers? Users?), although that never transpired. So we decided to go with what we considered a mild neologism.

Answer 6

Since most of the early computer software, especially Operating Systems like Unix, Linux, Windows etc have been developed by people working in US (though not all were Americans), much of the literature referring to Computer systems and software, have spellings that are non-standard for British English. Since, most of the documentations, and even researches still dominated by American academia and industry, atleast in volume, such spellings have persisted in most parts of the world, whether formally respected or not.