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Omicron (uppercase ?, lowercase ?, literally "small o" : ?µ?????, o mikron, micron meaning 'small' in contrast to omega) is the 15th letter of the Greek alphabet. In the system of Greek numerals it has a value of 70. It is rarely used in mathematics because it is indistinguishable from the Latin letter O and easily confused with the digit 0. This letter is equal to the Phoenician letter Ayin. In modern Greek, Omicron represents the sound IPA2 ??. Letters that arose from omicron include Roman O and Cyrillic O.
In Unicode the capital letter is codepoint U+039F and the lowercase is U+03BF.
The upper-case letter of omicron (O) was originally used as a symbol for Big O notation, representing the asymptotic rate of growth of a function in mathematics.
In Popular Culture - Omicron is used as the name of a planet in Futurama, "Omicron Persei 8", which is populated by large angry aliens.
Category:Greek letters
Category:Vowel letters
Category:Articles lacking sources (Erik9bot)
writingsystem-stub
als:?
ar:????????
arc:?
br:Omikron (lizherenn)
bg:???????
ca:Òmicron
cs:Omikron
cy:Omicron
da:Omikron
de:Omikron
el:?µ?????
es:?
eo:Omikrono
eu:Omikron
fa:??????? (???)
fr:Omicron
ga:Oimeacrón
gd:Omicron
gl:Omicrón
ko:?
hr:Omikron
id:Omikron
is:Ómíkron
it:Omicron (lettera)
he:????????
ka:???????? (???)
ht:?
ku:Omikron
la:Omicron
lt:Omikron (raide)
hu:Omikron
ms:Omikron
nah:?
nl:Omikron
ja:?
no:Omikron
nn:Omikron
nds:Omikron
pl:Omikron
pt:?
ru:??????? (?????)
simple:Omicron
sk:Omikrón
sl:Omikron
sh:Omikron
fi:Omikron
sv:Omikron
th:????????
tr:?
uk:??????? (??????)
wuu:?
zh-yue:?
zh:?
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