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Wikipedia also lists b/w I've certainly seen that meaning “black/white,” which goes in the same category as r/w, but Wikipedia says it's also used for “between,” which I don't think I've seen before. In the abbreviations I'm talking about in this entry, it's not clear to me why the slash is there. Wikipedia's discussion includes such abbreviations as r/w (“read/write”) and i/o (“input/output”)-both of which I think I usually see in uppercase-but those seem to me to be in a different category, because the phrase they're abbreviating also contains a slash. I had never seen this before British members of the SH staff used it I was initially sure it must be a typo, perhaps for w/e, which I think I've occasionally seen as short for “week ending.” I'm guessing w/c must be more common in the UK than in the US. Most two-letter abbreviations are short for a two-word phrase even “without” could be thought of as “with” and “out.” But why would an abbreviation for “because” include the C? I suppose you could break up the word into “be” and “cause.” w/c week commencing. I see this fairly often, but it's always seemed weird to me. Note that w/ is often used for “with,” so I guess w/o for “without” is a natural extension of that. I'm particularly intrigued by the two-letter slash abbreviations for single words. Almost always written in uppercase, unlike a lot of these. Also u/c for “uppercase,” though I think I see that more rarely. As used by editors to suggest making a word lowercase. This is the one I'm most familiar with and see (and use) most often. If anyone knows why that is, I'd be interested to find out more TSOR hasn't turned anything up.īut mostly I'm writing this 'cause I think it's an interesting phenomenon, and I wanted to put together a partial list. In English, most of our two-letter abbreviations are written as either two letters by themselves, or two letters with one or two periods.īut there are a few that are written with a slash between the two letters.
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