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It may be placed after an initial letter used to abbreviate a word. It is often placed after each individual letter in acronyms and initialisms (e.g., "U.S."). However, the use of full stops after letters in an initialism or acronym is declining, and many of these without punctuation have become accepted norms (e.g., "UK" and "NATO").
When an abbreviation appears at the end of a sentence, only one period is used: The capital of the United States is Washington, D.C. In the past, some initialisms were styled with a period after each letter and a space between each pair. For example, U. S., but today this is typically US.
A shortening is an abbreviation formed by removing at least the last letter of a word (e.g. etc. and rhino), and sometimes also containing letters not present in the full form (e.g. bike). As a general rule, use a full point after a shortening that only exists in writing (e.g. etc. ) but not for a shortening that is used in speech (e.g. rhino ).
Lists of acronyms contain acronyms, a type of abbreviation formed from the initial components of the words of a longer name or phrase. They are organized ...
The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...
This list of all two-letter combinations includes 1352 (2 × 26 2) of the possible 2704 (52 2) combinations of upper and lower case from the modern core Latin alphabet. A two-letter combination in bold means that the link links straight to a Wikipedia article (not a disambiguation page).
In a new study, scientists prove that ending your text with a period could make you come across insincere. Skip to main content. News. 24/7 help. For premium support please call: ...
Where periods are used, it is "Ph.D." p.m. post meridiem "after midday" Used on the twelve-hour clock to indicate times after 12 midday. Example: "We will meet the mayor at 2:00 p.m." (14:00 in 24-hour clock) p.m.a. post mortem auctoris "after the author's death" p.p. per pro. per procurationem "through the agency of" PRN pro re nata "for the ...