O.s. Definition

abbreviation
Left eye.
Webster's New World
Old series.
American Heritage
Out of stock.
American Heritage

(cricket) The number of overs bowled.

Wiktionary
letter

The fifteenth letter of the English alphabet, called o and written in the Latin script.

Wiktionary
noun

A blood type that lacks A or B antigens and may only receive transfusions of similar type O blood, but may donate to all (neglecting Rh fact). Synonym: universal donor.

Wiktionary

(printing) American Library Association Abbreviation of octavo, a book size (20-25 cm).

Wiktionary
(soccer) Someone associated with Leyton Orient Football Club, as a player, coach, supporter etc.
Wiktionary

Plural form of o.

Wiktionary
numeral

The ordinal number fifteenth, derived from this letter of the English alphabet, called o and written in the Latin script.

Wiktionary

Origin of O.s.

  • English O, o is attested in William Tyndale's 1525 New Testament Translation, as a translation of Ancient Greek ὦ, Latin o. (Compare the Old English particles èalà, æàlà, ǽlà, hèlà.) In Middle English, O is found in Acts 13:10, Romans 9:20 and Galatians 3:1, and ò is found in Romans 2:1,3, of John Wycliff's Newe Testament (1382). Compare la (a particle for introducing a statement or expressing surprise), from Old English; compare also English lo, oh.

    From Wiktionary

  • Compare the Old Saxon gloss o (950s) of the Lambeth MS (957) of the Gallican Psalter and the ó, o (post-1000) of the Durham Hymns, regularly seen in the redundant forms "o eala þu" and "ó eala þu" by proper names.

    From Wiktionary

  • Compare also the Anglo-Norman O (about 1200) of the manuscripts of Saints Juliana and Katherine, and other religious writs.

    From Wiktionary