Questions tagged [abbreviations]

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When did acronyms first appear?

Acronyms are abbreviations that are read as whole words rather than letter by letter — or in other words, they are words formed from initials of a phrase. "NATO" and "laser" are two examples. I ...
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Can Roman numerals stand for any kind of Latin numbers?

Latin has four classes of number words. Can Roman numerals (I, II, …) be used to for any class, or should they be restricted to, say, cardinals and ordinals? For example, can I abbreviate any ...
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Did the Romans abbreviate the days of the week?

In current Spanish when we have to abbreviate the days of the week using only one character, in most places (but not everywhere) to tell apart martes (Tuesday) from miércoles (Wednesday) we use 'M' ...