Science Fair Project Encyclopedia
O
O is the fifteenth letter of the Latin alphabet.
The letter was derived from the Semitic 'Ajin which represented a consonant, probably the pharyngeal consonant (IPA ) similar to the Arabic letter ع called 'Ajn', but in Greek (Omicron), Etruscan and Latin it came to be used for the vowel /o/.
Oscar represents the letter O in the NATO phonetic alphabet. In the International phonetic alphabet, [o] represents the close-mid back rounded vowel.
In medicine, O (also, O+ or O-) is one of the human blood types.
In chemistry, O stands for oxygen.
O is also a symbol for a hug, as in love notes. (See Hugs and Kisses.)
O is also the nickname of a magazine founded by Oprah Winfrey, more formally called O, The Oprah Magazine.
O may refer to the 2002 album by Damien Rice, see O (album)
O is also a movie.
O is a family name in Japanese; see O (name).
Story of O is a French erotic novel.
In economics, O is usually used to represent output.
See also
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