prefixes - ορισμός. Τι είναι το prefixes
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Τι (ποιος) είναι prefixes - ορισμός

AFFIX WHICH IS PLACED BEFORE THE STEM OF A WORD
Prefixes; Prefixation; Prefix (linguistics); Preformative; Prefix in-
  • A comparison of prepositions and directional prefixes in Greek, Latin, English, and German.

prefix         
1. <unit> The standard metric prefixes used in the {Systeme International d'Units} (SI) conventions for scientific measurement. Here are the SI magnifying prefixes, along with the corresponding binary interpretations in common use: prefix abr decimal binary yocto- 1000^-8 zepto- 1000^-7 atto- 1000^-6 femto- f 1000^-5 pico- p 1000^-4 nano- n 1000^-3 micro- * 1000^-2 * Abbreviation: Greek mu milli- m 1000^-1 kilo- k 1000^1 1024^1 = 2^10 = 1,024 mega- M 1000^2 1024^2 = 2^20 = 1,048,576 giga- G 1000^3 1024^3 = 2^30 = 1,073,741,824 tera- T 1000^4 1024^4 = 2^40 = 1,099,511,627,776 peta- 1000^5 1024^5 = 2^50 = 1,125,899,906,842,624 exa- 1000^6 1024^6 = 2^60 = 1,152,921,504,606,846,976 zetta- 1000^7 1024^7 = 2^70 = 1,180,591,620,717,411,303,424 yotta- 1000^8 1024^8 = 2^80 = 1,208,925,819,614,629,174,706,176 "Femto" and "atto" derive not from Greek but from Danish. The abbreviated forms of these prefixes are common in electronics and physics. When used with bytes of storage, these prefixes usually denote multiplication by powers of 1024 = 2^10 (K, M, and G are common in computing). Thus "MB" stands for megabytes (2^20 bytes). This common practice goes against the edicts of the BIPM who deprecate the use of these prefixes for powers of two. The formal SI prefix for 1000 is lower case "k"; some, including this dictionary, use this strictly, reserving upper case "K" for multiplication by 1024 (KB is thus "kilobytes"). Also, in data transfer rates the prefixes stand for powers of ten so, for example, 28.8 kb/s means 28,800 bits per second. The unit is often dropped so one may talk of "a 40K salary" (40000 dollars) or "2 meg of disk space" (2*2^20 bytes). The accepted pronunciation of the initial G of "giga-" is hard, /gi'ga/. Confusing 1000 and 1024 (or other powers of 2 and 10 close in magnitude) - for example, describing a memory in units of 500K or 524K instead of 512K - is a sure sign of the marketroid. For example, 3.5" microfloppies are often described as storing "1.44 MB". In fact, this is completely specious. The correct size is 1440 KB = 1440 * 1024 = 1474560 bytes. Alas, this point is probably lost on the world forever. In 1993, hacker Morgan Burke proposed, to general approval on Usenet, the following additional prefixes: groucho (10^-30), harpo (10^-27), harpi (10^27), grouchi (10^30). This would leave the prefixes zeppo-, gummo-, and chico- available for future expansion. Sadly, there is little immediate prospect that Mr. Burke's eminently sensible proposal will be ratified. 2. <language> Related to the prefix notation. (2003-05-06)
prefix         
¦ noun a word, letter, or number placed before another.
?an element placed at the beginning of a word to adjust or qualify its meaning (e.g. ex-, non-, re-) or (in some languages) as an inflection.
?a title placed before a name (e.g. Mr).
¦ verb add as a prefix or introduction.
?add a prefix or introduction to.
Derivatives
prefixation noun
Origin
C16 (as v.): from OFr. prefixer, from L. praefixus, praefigere 'fix in front', from prae 'before' + figere 'to fix'; the noun is from mod. L. praefixum, neut. of praefixus.
prefix         
v. (d; tr.) to prefix to (to prefix a title to a name)

Βικιπαίδεια

Prefix

A prefix is an affix which is placed before the stem of a word. Adding it to the beginning of one word changes it into another word. For example, when the prefix un- is added to the word happy, it creates the word unhappy. Particularly in the study of languages, a prefix is also called a preformative, because it alters the form of the words to which it is affixed.

Prefixes, like other affixes, can be either inflectional, creating a new form of the word with the same basic meaning and same lexical category (but playing a different role in the sentence), or derivational, creating a new word with a new semantic meaning and sometimes also a different lexical category. Prefixes, like all other affixes, are usually bound morphemes.

In English, there are no inflectional prefixes; English uses suffixes instead for that purpose.

The word prefix is itself made up of the stem fix (meaning "attach", in this case), and the prefix pre- (meaning "before"), both of which are derived from Latin roots.

Παραδείγματα από το σώμα κειμένου για prefixes
1. Related Article New Prefixes for Direct Lines (Jun. 30, 2006)
2. The only problem is that ě$';ňü (to wash or clean) is a tricky little word, especially when prefixes are added.
3. The basic verb for getting old in Russian is ńňŕđĺňü, but you need to pay attention to prefixes. Óńňŕđĺâŕňü/óńňŕđĺňü is the verb pair you use for an inanimate object that is becoming obsolete.
4. Users can search for prefixes, or just the first few letters of a word, in recognition of the sloppy or casual spelling of many e–mail writers in the age of electronic spellcheckers, Ellis said.