[Forum] RE: First Instance of Abbreviation: Where?

If the first occurrence is in a title or header, of course they should be spelled out. Your question is when the abbreviation should be introduced. Pixna suggested that it should be introduced in the first instance of the name in running text. It makes sense to me to leave the header, just a header

[Forum] Space or no space

Do spaces come under punctuation? Regardless, here goes: With the abbreviation kN for kilonewton and J for joule, should there be a space between the number and the abbreviation? 6 kN or 6kN 7 J or 7J

[Forum] "United States" Abbreviation

In the summary of changes in the new 16th edition, I read Chicago now prefers abbreviating "United States" as "US" (rather than "U.S."). That said, does this rule apply to official titles/names that may traditionally use the abbreviation with initials? (Example: [i]U.S. News & World Report[/i])

[Forum] Abbreviation or no?

In fiction writing, I spell out the word Saint (e.g. Saint Paul) when using it in dialogue. However, I've been using the abbreviation, St. (e.g. St. Paul) in narrative. An editor is requesting I use Saint in all instances. What say you, CMOS community?

[Forum] RE: Interrupted dialogue with initials

If you need an ellipsis, the periods after a preceding abbreviation have no effect on the number of dots needed for the ellipsis. It should be the standard three (not including the period after the abbreviation) regardless. However, as this is such an awkward punctuation construction, I'd consider a

[Forum] Making an initialization possessive?

If I’m writing a sentence where a company/org is possessive, and it’s the first usage so I’m introducing the abbreviation, does the abbreviation in parentheses also become possessive? For example: [font=Arial]The Chocolate Cake Foundation’s (CCF) first annual bake-off is today. [/font] So is

[Forum] abbreviation of month in revision date

This question is whether it is okay not to include a period after the abbreviation of a month in a revision date if the abbreviation is in all caps. I'm working on the style of the revision date for curriculum documents for a school. Using the date of August 22, 2014 as an example, the current s

[Forum] RE: Corp vs. Corporation

Sounds whimsical. Corp with a period at the end is an abbreviation for corporation, without a period is an (informal) abbreviation for a corporal, which as you know, is a name for a low-ranking noncommissioned officer in the US armed forces. In either case, the etymology of the word suggests body.

[Forum] abbreviation for mobile learning

Greetings from New Zealand. Is there a well-established abbreviation for mobile learning? The article I'm proofreading uses "mLearning," but I presume this is influenced by the erroneous use of "eLearning" by the eLearning Guild (is there any area so woefully inept at style as the online world?).

[Forum] A versus An with Molecule Abbreviations

When a molecule is abbreviated in a text, should I use the first letter of the full molecule name or the first letter of the abbreviation when choosing to use [i]a[/i] or [i]an[/i] before the abbreviation? For example, nitrogen oxide is NOx. Would it be "an NOx molecule" or "a NOx molecule"? T