May 30, 2013 · I purposely didn't mention I/O & c/o in my previous comment as I was aware of those. In particular, c/o has been used as long as I can remember. But otherwise this suggests I was roughly correct. Of course, it doesn't indicate what the abbreviations meant (e.g. A/C - see prev. comment.) I suppose also that w/o would show up as both w/o & w/? –

Dec 12, 2015 · The function of the 'y' and 'w' in Yell and Well are not in any material sense different to the leading consonants in Tell, Sell, and Fell. The inclusion of 'y' as a semi-vowel in "cry" or "rhythm" is of course not controversial, but I think it's quite a stretch to go much further than that, when both letters are used as regular consonants.

Further complicating things, w has both voiced and unvoiced qualities, a result of the evolution of the Latin alphabet to replace runic alphabets in Germanic languages. It also picked up other tricks; W in combination with H is usually unvoiced (though some dialects voice "wh" as if it were "w"), representing an unvoiced rounded lip alveolar ...

Apr 2, 2015 · 2 pieces toast w/ gravy. Is a shorter way of writing "Two pieces of toast with gravy." The B strings tuned w/ low E 7th fret harmonic-(6th string,7th fret). means "The B strings tuned with low E, 7th fret harmonic . . ." Edited to add: As Denis de Bernardy correctly notes in the comment below, w/o means the opposite: without.

现目前已经有ai 9 365的轻薄本了，但都是同型号的8845h版本换装cpu版本，同型号不同cpu，机器性能释放激进程度也没有变，8845h版本给多少w，ai 9 365也给多少w，就是基准强度的差距！

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When I see w.r.t. I interpret it as with respect to. Per ngrams for with respect to,with regard to,with reference to,With respect to,With regard to,With reference to, phrase with respect to occurs more often than either phrase you mentioned. –

W=double v. 后来，为方便区分元音的V和辅音V，又把原来的V的下方改成圆形而定为元音U。 所以你去看拉丁语国家的历史文字遗迹时，是没有U，只有V的。 随着时代发展，英国人的祖先到了大不列颠岛后，他们发明了花体，于是两个V连成的W，写成了两个U连成的W。

Using w.r.t. is definitely acceptable in even the most formal technical contexts, e.g. in published mathematical research. In fact, I remember some discussion of the fact that David Foster Wallace over-enthusiastically embraced this and other technical jargon in a non-fiction book he wrote about the notion of infinity. –