O definition of O in the Free Online Encyclopedia.

O, 15th letter of the alphabet alphabet [Gr. alpha-beta, like Eng. ABC], system of writing , theoretically having a one-for-one relation between character (or letter) and phoneme (see phonetics ). Few alphabets have achieved the ideal exactness.
..... Click the link for more information. . It is a usual symbol for a mid-back, rounded vowel, rather like the first part of oi. Such a vowel was represented by omicron [Gr.,=little o], its formal and positional correspondent in the Greek alphabet. English ō is a diphthong of ŏ and w. In chemistry O is the symbol of the element oxygen oxygen, gaseous chemical element; symbol O; at. no. 8; at. wt. 15.9994; m.p. −218.4°C;; b.p. −182.962°C;; density 1.429 grams per liter at STP; valence −2.
..... Click the link for more information. . In surnames O' is derived from the Irish patronymic system; e.g., O'Neill meant "grandson of Niall," probably referring originally to Niall Glundubh, high king of Ireland, 915–19 (see name name. Personal identifying names are found in every known culture, and they often pass from one language to another. Hence the occurrence of Native American place names throughout the United States and the occurrence among American families of names of various
..... Click the link for more information. ).

a beautiful woman willing to undergo every form of sexual manipulation at the bidding of her lover. [Fr. Lit.: Pauline Reage The Story of 0 in Weiss, 445]

See : Eroticism

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