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An approximate model is used to make calculations easier. Approximations might also be used if incomplete information prevents use of exact representations. The type of approximation used depends on the available information , the degree of accuracy required , the sensitivity of the problem to this data, and the savings (usually in time and ...
This is a list of contractions used in the Wikipedia:Manual of Style/Abbreviations; these are to be avoided anywhere other than in direct quotations in encyclopedic prose. Some acronyms are formed by contraction; these are covered at Wikipedia:Manual of Style/Abbreviations.
An approximate or range conversion is acceptable if the exact historical value is uncertain (e.g. stadion). Metric units not part of the SI or accepted for use with it should either be replaced with SI or SI-accepted units (e.g. joules instead of ergs), or they should be treated as obscure units in the same way as furlongs.
Engineering drawing abbreviations and symbols are used to communicate and detail the characteristics of an engineering drawing.This list includes abbreviations common to the vocabulary of people who work with engineering drawings in the manufacture and inspection of parts and assemblies.
Grammatical abbreviations are generally written in full or small caps to visually distinguish them from the translations of lexical words. For instance, capital or small-cap PAST (frequently abbreviated to PST) glosses a grammatical past-tense morpheme, while lower-case 'past' would be a literal translation of a word with that meaning.
An acronym is a type of abbreviation that shortens a phrase by combining the first letter (or letters) of each word in the phrase to form a new pronounceable word. Here are some acronym examples:
An initialism is an abbreviation formed from some or all of the initial letters of words in a phrase. An acronym is sometimes considered to be an initialism that is pronounced as a word (e.g. NATO), as distinct from an initialism pronounced as a string of individual letters (e.g. "UN" for United Nations).
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